Use an explicit x86-64 cpu in tests that are sensitive to it

There are a few tests that depend on some target features **not** being
enabled by default, and usually they are correct with the default x86-64
target CPU. However, in downstream builds we have modified the default
to fit our distros -- `x86-64-v2` in RHEL 9 and `x86-64-v3` in RHEL 10
-- and the latter especially trips tests that expect not to have AVX.

These cases are few enough that we can just set them back explicitly.

tests/assembly/simd-intrinsic-mask-reduce.rs

@@ -1,6 +1,7 @@
 // verify that simd mask reductions do not introduce additional bit shift operations
 //@ revisions: x86 aarch64
 //@ [x86] compile-flags: --target=x86_64-unknown-linux-gnu -C llvm-args=-x86-asm-syntax=intel
+//@ [x86] compile-flags: -C target-cpu=x86-64
 //@ [x86] needs-llvm-components: x86
 //@ [aarch64] compile-flags: --target=aarch64-unknown-linux-gnu
 //@ [aarch64] needs-llvm-components: aarch64

tests/assembly/x86_64-floating-point-clamp.rs

@@ -2,7 +2,7 @@
 // so check to make sure that's what it's actually emitting.
 
 //@ assembly-output: emit-asm
-//@ compile-flags: --crate-type=lib -O -C llvm-args=-x86-asm-syntax=intel
+//@ compile-flags: --crate-type=lib -O -C llvm-args=-x86-asm-syntax=intel -C target-cpu=x86-64
 //@ only-x86_64
 //@ ignore-sgx
 

tests/codegen/target-feature-inline-closure.rs

@@ -1,5 +1,5 @@
 //@ only-x86_64
-//@ compile-flags: -Copt-level=3
+//@ compile-flags: -Copt-level=3 -Ctarget-cpu=x86-64
 
 #![crate_type = "lib"]
 #![feature(target_feature_11)]

tests/ui/asm/x86_64/target-feature-attr.rs

@@ -1,4 +1,5 @@
 //@ only-x86_64
+//@ compile-flags: -C target-cpu=x86-64
 
 #![feature(avx512_target_feature)]
 

tests/ui/asm/x86_64/target-feature-attr.stderr

@@ -1,23 +1,23 @@
 error: register class `ymm_reg` requires the `avx` target feature
-  --> $DIR/target-feature-attr.rs:18:40
+  --> $DIR/target-feature-attr.rs:19:40
    |
 LL |     asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
    |                                        ^^^^^^^^^^^^^
 
 error: register class `ymm_reg` requires the `avx` target feature
-  --> $DIR/target-feature-attr.rs:18:55
+  --> $DIR/target-feature-attr.rs:19:55
    |
 LL |     asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
    |                                                       ^^^^^^^^^^^^^
 
 error: register class `ymm_reg` requires the `avx` target feature
-  --> $DIR/target-feature-attr.rs:18:70
+  --> $DIR/target-feature-attr.rs:19:70
    |
 LL |     asm!("vaddps {2:y}, {0:y}, {1:y}", in(ymm_reg) x, in(ymm_reg) y, lateout(ymm_reg) x);
    |                                                                      ^^^^^^^^^^^^^^^^^^
 
 error: register class `kreg` requires at least one of the following target features: avx512bw, avx512f
-  --> $DIR/target-feature-attr.rs:33:23
+  --> $DIR/target-feature-attr.rs:34:23
    |
 LL |     asm!("/* {0} */", in(kreg) x);
    |                       ^^^^^^^^^^

tests/ui/consts/const-eval/const_fn_target_feature.rs

@@ -1,5 +1,5 @@
 //@ only-x86_64
-//@ compile-flags:-C target-feature=+ssse3
+//@ compile-flags: -C target-cpu=x86-64 -C target-feature=+ssse3
 
 #![crate_type = "lib"]
 

tests/ui/rfcs/rfc-2396-target_feature-11/safe-calls.rs

@@ -1,4 +1,5 @@
 //@ only-x86_64
+//@ compile-flags: -C target-cpu=x86-64
 
 #![feature(target_feature_11)]
 

tests/ui/rfcs/rfc-2396-target_feature-11/safe-calls.stderr

@@ -1,5 +1,5 @@
 error[E0133]: call to function `sse2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:25:5
+  --> $DIR/safe-calls.rs:26:5
    |
 LL |     sse2();
    |     ^^^^^^ call to function with `#[target_feature]`
@@ -8,7 +8,7 @@ LL |     sse2();
    = note: the sse2 target feature being enabled in the build configuration does not remove the requirement to list it in `#[target_feature]`
 
 error[E0133]: call to function `avx_bmi2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:27:5
+  --> $DIR/safe-calls.rs:28:5
    |
 LL |     avx_bmi2();
    |     ^^^^^^^^^^ call to function with `#[target_feature]`
@@ -16,7 +16,7 @@ LL |     avx_bmi2();
    = help: in order for the call to be safe, the context requires the following additional target features: avx and bmi2
 
 error[E0133]: call to function `Quux::avx_bmi2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:29:5
+  --> $DIR/safe-calls.rs:30:5
    |
 LL |     Quux.avx_bmi2();
    |     ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
@@ -24,7 +24,7 @@ LL |     Quux.avx_bmi2();
    = help: in order for the call to be safe, the context requires the following additional target features: avx and bmi2
 
 error[E0133]: call to function `avx_bmi2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:35:5
+  --> $DIR/safe-calls.rs:36:5
    |
 LL |     avx_bmi2();
    |     ^^^^^^^^^^ call to function with `#[target_feature]`
@@ -32,7 +32,7 @@ LL |     avx_bmi2();
    = help: in order for the call to be safe, the context requires the following additional target features: avx and bmi2
 
 error[E0133]: call to function `Quux::avx_bmi2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:37:5
+  --> $DIR/safe-calls.rs:38:5
    |
 LL |     Quux.avx_bmi2();
    |     ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
@@ -40,7 +40,7 @@ LL |     Quux.avx_bmi2();
    = help: in order for the call to be safe, the context requires the following additional target features: avx and bmi2
 
 error[E0133]: call to function `sse2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:43:5
+  --> $DIR/safe-calls.rs:44:5
    |
 LL |     sse2();
    |     ^^^^^^ call to function with `#[target_feature]`
@@ -49,7 +49,7 @@ LL |     sse2();
    = note: the sse2 target feature being enabled in the build configuration does not remove the requirement to list it in `#[target_feature]`
 
 error[E0133]: call to function `avx_bmi2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:45:5
+  --> $DIR/safe-calls.rs:46:5
    |
 LL |     avx_bmi2();
    |     ^^^^^^^^^^ call to function with `#[target_feature]`
@@ -57,7 +57,7 @@ LL |     avx_bmi2();
    = help: in order for the call to be safe, the context requires the following additional target feature: bmi2
 
 error[E0133]: call to function `Quux::avx_bmi2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:47:5
+  --> $DIR/safe-calls.rs:48:5
    |
 LL |     Quux.avx_bmi2();
    |     ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
@@ -65,7 +65,7 @@ LL |     Quux.avx_bmi2();
    = help: in order for the call to be safe, the context requires the following additional target feature: bmi2
 
 error[E0133]: call to function `sse2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:54:5
+  --> $DIR/safe-calls.rs:55:5
    |
 LL |     sse2();
    |     ^^^^^^ call to function with `#[target_feature]`
@@ -74,7 +74,7 @@ LL |     sse2();
    = note: the sse2 target feature being enabled in the build configuration does not remove the requirement to list it in `#[target_feature]`
 
 error[E0133]: call to function `sse2` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:58:15
+  --> $DIR/safe-calls.rs:59:15
    |
 LL | const _: () = sse2();
    |               ^^^^^^ call to function with `#[target_feature]`
@@ -83,7 +83,7 @@ LL | const _: () = sse2();
    = note: the sse2 target feature being enabled in the build configuration does not remove the requirement to list it in `#[target_feature]`
 
 error[E0133]: call to function `sse2_and_fxsr` with `#[target_feature]` is unsafe and requires unsafe function or block
-  --> $DIR/safe-calls.rs:61:15
+  --> $DIR/safe-calls.rs:62:15
    |
 LL | const _: () = sse2_and_fxsr();
    |               ^^^^^^^^^^^^^^^ call to function with `#[target_feature]`
@@ -92,7 +92,7 @@ LL | const _: () = sse2_and_fxsr();
    = note: the fxsr and sse2 target features being enabled in the build configuration does not remove the requirement to list them in `#[target_feature]`
 
 error: call to function `sse2` with `#[target_feature]` is unsafe and requires unsafe block (error E0133)
-  --> $DIR/safe-calls.rs:68:5
+  --> $DIR/safe-calls.rs:69:5
    |
 LL |     sse2();
    |     ^^^^^^ call to function with `#[target_feature]`
@@ -101,12 +101,12 @@ LL |     sse2();
    = help: in order for the call to be safe, the context requires the following additional target feature: sse2
    = note: the sse2 target feature being enabled in the build configuration does not remove the requirement to list it in `#[target_feature]`
 note: an unsafe function restricts its caller, but its body is safe by default
-  --> $DIR/safe-calls.rs:67:1
+  --> $DIR/safe-calls.rs:68:1
    |
 LL | unsafe fn needs_unsafe_block() {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 note: the lint level is defined here
-  --> $DIR/safe-calls.rs:64:8
+  --> $DIR/safe-calls.rs:65:8
    |
 LL | #[deny(unsafe_op_in_unsafe_fn)]
    |        ^^^^^^^^^^^^^^^^^^^^^^

tests/ui/sse2.rs

@@ -20,6 +20,6 @@ fn main() {
                 "SSE2 was not detected as available on an x86 platform");
     }
     // check a negative case too -- allowed on x86, but not enabled by default
-    assert!(cfg!(not(target_feature = "avx2")),
-            "AVX2 shouldn't be detected as available by default on any platform");
+    assert!(cfg!(not(target_feature = "avx512f")),
+            "AVX512 shouldn't be detected as available by default on any platform");
 }