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rust/tests/mir-opt
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bors 2a4b00beaa Auto merge of #106908 - cjgillot:copyprop-ssa, r=oli-obk 
Implement simple CopyPropagation based on SSA analysis

This PR extracts the "copy propagation" logic from https://github.com/rust-lang/rust/pull/106285.

MIR may produce chains of assignment between locals, like `_x = move? _y`.
This PR attempts to remove such chains by unifying locals.

The current implementation is a bit overzealous in turning moves into copies, and in removing storage statements.
2023-01-29 13:01:06 +00:00
..
building Bless mir-opt tests. 2023-01-27 22:01:47 +00:00
const_prop Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
copy-prop Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
dataflow-const-prop Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
dead-store-elimination Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deref-patterns Move /src/test to /tests 2023-01-11 09:32:08 +00:00
dest-prop Move /src/test to /tests 2023-01-11 09:32:08 +00:00
inline Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
issues Fix mir-opt tests for big-endian platforms 2023-01-12 18:05:30 +01:00
nll i am free 2023-01-18 04:45:43 +00:00
address_of.address_of_reborrow.SimplifyCfg-initial.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
address_of.borrow_and_cast.SimplifyCfg-initial.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
address_of.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
array_index_is_temporary.main.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
array_index_is_temporary.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
asm_unwind_panic_abort.main.AbortUnwindingCalls.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
asm_unwind_panic_abort.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
basic_assignment.main.SimplifyCfg-initial.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
basic_assignment.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
bool_compare.opt1.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
bool_compare.opt2.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
bool_compare.opt3.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
bool_compare.opt4.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
bool_compare.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
box_expr.main.ElaborateDrops.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
box_expr.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
byte_slice.main.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
byte_slice.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
combine_array_len.norm2.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
combine_array_len.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
combine_clone_of_primitives.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation2.main.ConstProp.after.32bit.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation2.main.ConstProp.after.64bit.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation2.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation3.main.ConstProp.after.32bit.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation3.main.ConstProp.after.64bit.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation3.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation.main.ConstProp.after.32bit.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation.main.ConstProp.after.64bit.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_allocation.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_debuginfo.main.ConstDebugInfo.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
const_debuginfo.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_goto_const_eval_fail.f.ConstGoto.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_goto_const_eval_fail.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_goto_storage.match_nested_if.ConstGoto.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_goto_storage.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_goto.issue_77355_opt.ConstGoto.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_goto.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_promotion_extern_static.BAR-promoted[0].SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_promotion_extern_static.BAR.PromoteTemps.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_promotion_extern_static.BOP.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_promotion_extern_static.FOO-promoted[0].SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_promotion_extern_static.FOO.PromoteTemps.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_promotion_extern_static.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
const_prop_miscompile.bar.ConstProp.diff Make tests unit. 2023-01-27 18:22:44 +00:00
const_prop_miscompile.foo.ConstProp.diff Make tests unit. 2023-01-27 18:22:44 +00:00
const_prop_miscompile.rs Make tests unit. 2023-01-27 18:22:44 +00:00
coverage_graphviz.bar.InstrumentCoverage.0.dot Move /src/test to /tests 2023-01-11 09:32:08 +00:00
coverage_graphviz.main.InstrumentCoverage.0.dot Move /src/test to /tests 2023-01-11 09:32:08 +00:00
coverage_graphviz.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test_enum_2.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test_enum_2.test1.Deaggregator.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test_enum.bar.Deaggregator.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test_enum.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test_multiple.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test_multiple.test.Deaggregator.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test.bar.Deaggregator.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deaggregator_test.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deduplicate_blocks.is_line_doc_comment_2.DeduplicateBlocks.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
deduplicate_blocks.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_complex_case.main.Derefer.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_complex_case.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_inline_test.main.Derefer.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_inline_test.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_terminator_test.main.Derefer.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_terminator_test.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_test_multiple.main.Derefer.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_test_multiple.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_test.main.Derefer.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
derefer_test.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
div_overflow.const_dividend.PreCodegen.after.mir Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
div_overflow.const_divisor.PreCodegen.after.mir Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
div_overflow.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_3_element_tuple.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_68867.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_noopt.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch_soundness.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
early_otherwise_branch.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
equal_true.opt.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
equal_true.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
exponential_or.match_tuple.SimplifyCfg-initial.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
exponential_or.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
fn_ptr_shim.core.ops-function-Fn-call.AddMovesForPackedDrops.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
fn_ptr_shim.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
funky_arms.float_to_exponential_common.ConstProp.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
funky_arms.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
generator_drop_cleanup.main-{closure#0}.generator_drop.0.mir Bless mir-opt tests. 2023-01-27 22:01:47 +00:00
generator_drop_cleanup.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
generator_storage_dead_unwind.main-{closure#0}.StateTransform.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
generator_storage_dead_unwind.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
generator_tiny.main-{closure#0}.generator_resume.0.mir Bless mir-opt tests. 2023-01-27 22:01:47 +00:00
generator_tiny.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
graphviz.main.built.after.dot Move /src/test to /tests 2023-01-11 09:32:08 +00:00
graphviz.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.dont_opt_bool.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.dont_remove_comparison.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.opt_char.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.opt_i8.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.opt_negative.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.opt_u32.SimplifyComparisonIntegral.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
if_condition_int.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
instrument_coverage.bar.InstrumentCoverage.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
instrument_coverage.main.InstrumentCoverage.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
instrument_coverage.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
intrinsic_asserts.generic.InstCombine.diff InstCombine away intrinsic validity assertions 2023-01-15 16:51:42 -05:00
intrinsic_asserts.panics.InstCombine.diff InstCombine away intrinsic validity assertions 2023-01-15 16:51:42 -05:00
intrinsic_asserts.removable.InstCombine.diff InstCombine away intrinsic validity assertions 2023-01-15 16:51:42 -05:00
intrinsic_asserts.rs InstCombine away intrinsic validity assertions 2023-01-15 16:51:42 -05:00
issue_38669.main.SimplifyCfg-initial.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_38669.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41110.main.ElaborateDrops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41110.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41110.test.ElaborateDrops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41697.{impl#0}-{constant#0}.SimplifyCfg-promote-consts.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41697.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41888.main.ElaborateDrops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_41888.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_62289.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_62289.test.ElaborateDrops.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181_1.f.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181_1.main.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181_1.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181.bar.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181.foo.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181.main.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_72181.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_76432.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_76432.test.SimplifyComparisonIntegral.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
issue_78192.f.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_78192.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_91633.bar.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_91633.foo.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_91633.fun.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_91633.hey.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_91633.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_99325.main.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_99325.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
issue_101973.inner.ConstProp.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
issue_101973.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
loop_test.main.SimplifyCfg-promote-consts.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
loop_test.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len_e2e.array_bound_mut.PreCodegen.after.mir Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
lower_array_len_e2e.array_bound.PreCodegen.after.mir Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
lower_array_len_e2e.array_len_by_value.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len_e2e.array_len.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len_e2e.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len.array_bound_mut.NormalizeArrayLen.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len.array_bound.NormalizeArrayLen.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len.array_len_by_value.NormalizeArrayLen.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len.array_len.NormalizeArrayLen.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_array_len.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics_e2e.f_u64.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics_e2e.f_unit.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics_e2e.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.align_of.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.assume.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.discriminant.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.forget.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.non_const.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.size_of.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.unreachable.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_intrinsics.wrapping.LowerIntrinsics.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_slice_len.bound.LowerSliceLenCalls.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
lower_slice_len.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
match_arm_scopes.complicated_match.SimplifyCfg-initial.after-ElaborateDrops.after.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
match_arm_scopes.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
match_test.main.SimplifyCfg-initial.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
match_test.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_reduce_branches.bar.MatchBranchSimplification.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_reduce_branches.foo.MatchBranchSimplification.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_reduce_branches.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_u8.exhaustive_match_i8.MatchBranchSimplification.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_u8.exhaustive_match.MatchBranchSimplification.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
matches_u8.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
multiple_return_terminators.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
multiple_return_terminators.test.MultipleReturnTerminators.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
no_drop_for_inactive_variant.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
no_drop_for_inactive_variant.unwrap.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
no_spurious_drop_after_call.main.ElaborateDrops.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
no_spurious_drop_after_call.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
not_equal_false.opt.InstCombine.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
not_equal_false.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
nrvo_simple.nrvo.RenameReturnPlace.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
nrvo_simple.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
packed_struct_drop_aligned.main.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
packed_struct_drop_aligned.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
README.md Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_fake_borrows.match_guard.CleanupPostBorrowck.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_fake_borrows.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_never_const.no_codegen.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_never_const.rs Change src/test to tests in source files, fix tidy and tests 2023-01-11 09:32:13 +00:00
remove_storage_markers.main.RemoveStorageMarkers.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_storage_markers.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_unneeded_drops.cannot_opt_generic.RemoveUnneededDrops.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
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remove_unneeded_drops.opt_generic_copy.RemoveUnneededDrops.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_unneeded_drops.opt.RemoveUnneededDrops.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_unneeded_drops.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_zsts.get_union.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
remove_zsts.get_union.RemoveZsts.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
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retag.{impl#0}-foo_shr.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
retag.{impl#0}-foo.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
retag.array_casts.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
retag.core.ptr-drop_in_place.Test.SimplifyCfg-make_shim.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
retag.main-{closure#0}.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
retag.main.SimplifyCfg-elaborate-drops.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
retag.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
return_an_array.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
separate_const_switch.identity.SeparateConstSwitch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
separate_const_switch.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
separate_const_switch.too_complex.SeparateConstSwitch.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simple_option_map_e2e.ezmap.PreCodegen.after.mir Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
simple_option_map_e2e.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_arm_identity.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_arm.id_try.SimplifyArmIdentity.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_arm.id_try.SimplifyBranchSame.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_arm.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_cfg.main.SimplifyCfg-early-opt.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_cfg.main.SimplifyCfg-initial.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_cfg.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_if.main.SimplifyConstCondition-after-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_if.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals_fixedpoint.foo.SimplifyLocals-final.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals_fixedpoint.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals_removes_unused_consts.main.SimplifyLocals-before-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals_removes_unused_consts.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals_removes_unused_discriminant_reads.map.SimplifyLocals-before-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals_removes_unused_discriminant_reads.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals.c.SimplifyLocals-before-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
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simplify_locals.expose_addr.SimplifyLocals-before-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals.r.SimplifyLocals-before-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_locals.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
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simplify_locals.t4.SimplifyLocals-before-const-prop.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_match.main.ConstProp.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
simplify_match.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_try_if_let.{impl#0}-append.SimplifyArmIdentity.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
simplify_try_if_let.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
slice_drop_shim.core.ptr-drop_in_place.[String].AddMovesForPackedDrops.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
slice_drop_shim.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
slice_filter.rs Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00
slice_filter.variant_a-{closure#0}.CopyProp.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
slice_filter.variant_a-{closure#0}.DestinationPropagation.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
slice_filter.variant_b-{closure#0}.CopyProp.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
slice_filter.variant_b-{closure#0}.DestinationPropagation.diff Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
spanview_block.main.built.after.html Move /src/test to /tests 2023-01-11 09:32:08 +00:00
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spanview_statement.main.built.after.html Move /src/test to /tests 2023-01-11 09:32:08 +00:00
spanview_statement.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
spanview_terminator.main.built.after.html Move /src/test to /tests 2023-01-11 09:32:08 +00:00
spanview_terminator.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.dropping.ScalarReplacementOfAggregates.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.enums.ScalarReplacementOfAggregates.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.escaping.ScalarReplacementOfAggregates.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.flat.ScalarReplacementOfAggregates.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.structs.ScalarReplacementOfAggregates.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
sroa.unions.ScalarReplacementOfAggregates.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
storage_ranges.main.nll.0.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
storage_ranges.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
tls_access.main.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
tls_access.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
try_identity_e2e.new.PreCodegen.after.mir Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
try_identity_e2e.old.PreCodegen.after.mir Do not merge locals that have their address taken. 2023-01-27 18:22:45 +00:00
try_identity_e2e.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum_branching2.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum_branching2.main.UninhabitedEnumBranching.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum_branching2.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum_branching.main.SimplifyCfg-after-uninhabited-enum-branching.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum_branching.main.UninhabitedEnumBranching.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum_branching.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum.process_never.SimplifyLocals-final.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum.process_void.SimplifyLocals-final.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_enum.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_fallthrough_elimination.eliminate_fallthrough.UninhabitedEnumBranching.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_fallthrough_elimination.keep_fallthrough.UninhabitedEnumBranching.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
uninhabited_fallthrough_elimination.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unreachable_diverging.main.UnreachablePropagation.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unreachable_diverging.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unreachable.main.UnreachablePropagation.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unreachable.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unusual_item_types.{impl#0}-ASSOCIATED_CONSTANT.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unusual_item_types.core.ptr-drop_in_place.Vec_i32_.AddMovesForPackedDrops.before.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unusual_item_types.E-V-{constant#0}.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unusual_item_types.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
unusual_item_types.Test-X-{constructor#0}.built.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
while_let_loops.change_loop_body.ConstProp.diff Move /src/test to /tests 2023-01-11 09:32:08 +00:00
while_let_loops.change_loop_body.PreCodegen.after.mir Move /src/test to /tests 2023-01-11 09:32:08 +00:00
while_let_loops.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
while_storage.rs Move /src/test to /tests 2023-01-11 09:32:08 +00:00
while_storage.while_loop.PreCodegen.after.mir Implement SSA CopyProp pass. 2023-01-27 18:22:45 +00:00

README.md

This folder contains tests for MIR optimizations.

The mir-opt test format emits MIR to extra files that you can automatically update by specifying --bless on the command line (just like ui tests updating .stderr files).

--blessable test format

By default 32 bit and 64 bit targets use the same dump files, which can be problematic in the presence of pointers in constants or other bit width dependent things. In that case you can add

// EMIT_MIR_FOR_EACH_BIT_WIDTH

to your test, causing separate files to be generated for 32bit and 64bit systems.

Unit testing

If you are only testing the behavior of a particular mir-opt pass on some specific input (as is usually the case), you should add

// unit-test: PassName

to the top of the file. This makes sure that other passes don't run which means you'll get the input you expected and your test won't break when other code changes.

Emit a diff of the mir for a specific optimization

This is what you want most often when you want to see how an optimization changes the MIR.

// EMIT_MIR $file_name_of_some_mir_dump.diff

Emit mir after a specific optimization

Use this if you are just interested in the final state after an optimization.

// EMIT_MIR $file_name_of_some_mir_dump.after.mir

Emit mir before a specific optimization

This exists mainly for completeness and is rarely useful.

// EMIT_MIR $file_name_of_some_mir_dump.before.mir