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51 lines
1.5 KiB
Rust
51 lines
1.5 KiB
Rust
//@ compile-flags: -Copt-level=3
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//@ revisions: host x86-64 x86-64-v3
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//@ min-llvm-version: 20
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//@[host] ignore-x86_64
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// Set the base cpu explicitly, in case the default has been changed.
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//@[x86-64] only-x86_64
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//@[x86-64] compile-flags: -Ctarget-cpu=x86-64
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// FIXME(cuviper) x86-64-v3 in particular regressed in #131563, and the workaround
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// at the time still sometimes fails, so only verify it for the power-of-two size
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// - https://github.com/llvm/llvm-project/issues/134735
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//@[x86-64-v3] only-x86_64
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//@[x86-64-v3] compile-flags: -Ctarget-cpu=x86-64-v3
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#![crate_type = "lib"]
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#[no_mangle]
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pub fn test() -> usize {
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// CHECK-LABEL: @test(
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// host: ret {{i64|i32}} 165
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// x86-64: ret {{i64|i32}} 165
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// FIXME: Now that this autovectorizes via a masked load, it doesn't actually
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// const-fold for certain widths. The `test_eight` case below shows that, yes,
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// what we're emitting *can* be const-folded, except that the way LLVM does it
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// for certain widths doesn't today. We should be able to put this back to
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// the same check after <https://github.com/llvm/llvm-project/issues/134513>
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// x86-64-v3: masked.load
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let values = [23, 16, 54, 3, 60, 9];
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let mut acc = 0;
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for item in values {
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acc += item;
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}
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acc
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}
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#[no_mangle]
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pub fn test_eight() -> usize {
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// CHECK-LABEL: @test_eight(
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// CHECK: ret {{i64|i32}} 220
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let values = [23, 16, 54, 3, 60, 9, 13, 42];
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let mut acc = 0;
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for item in values {
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acc += item;
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}
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acc
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}
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