[llvm] [X86] Don't rely on global -fp-contract=fast on X86 CodeGen tests (PR #158026)

[Evgenii Kudriashov via llvm-commits]

=?utf-8?q?Mikołaj_Piróg?= <mikolajpirog at gmail.com>,Pirog, Mikolaj
 Maciej <mikolaj.maciej.pirog at intel.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/158026 at github.com>


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@@ -23,18 +23,11 @@ define <4 x float> @fmul_pow2_4xfloat(<4 x i32> %i) {
 ; CHECK-AVX2-NEXT:    vpaddd %xmm1, %xmm0, %xmm0
 ; CHECK-AVX2-NEXT:    retq
 ;
-; CHECK-NO-FASTFMA-LABEL: fmul_pow2_4xfloat:
-; CHECK-NO-FASTFMA:       # %bb.0:
-; CHECK-NO-FASTFMA-NEXT:    vpslld $23, %xmm0, %xmm0
-; CHECK-NO-FASTFMA-NEXT:    vpbroadcastd {{.*#+}} xmm1 = [1091567616,1091567616,1091567616,1091567616]
-; CHECK-NO-FASTFMA-NEXT:    vpaddd %xmm1, %xmm0, %xmm0
-; CHECK-NO-FASTFMA-NEXT:    retq
-;
-; CHECK-FMA-LABEL: fmul_pow2_4xfloat:
-; CHECK-FMA:       # %bb.0:
-; CHECK-FMA-NEXT:    vpslld $23, %xmm0, %xmm0
-; CHECK-FMA-NEXT:    vpaddd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm0, %xmm0
-; CHECK-FMA-NEXT:    retq
+; CHECK-SKX-LABEL: fmul_pow2_4xfloat:
+; CHECK-SKX:       # %bb.0:
+; CHECK-SKX-NEXT:    vpslld $23, %xmm0, %xmm0
+; CHECK-SKX-NEXT:    vpaddd {{\.?LCPI[0-9]+_[0-9]+}}(%rip){1to4}, %xmm0, %xmm0
+; CHECK-SKX-NEXT:    retq
----------------
e-kud wrote:

@mikolaj-pirog something went wrong. The line
```
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK-AVX,CHECK-AVX512F
```
has no checks. I suppose now the line doesn't have a unique `CHECK` prefix and it conflicts with `-mcpu=skx`. This is why the script declined to generate checks for it.

https://github.com/llvm/llvm-project/pull/158026