[PATCH] D154804: [X86] Add tests for folding `fmul`/`fdiv` by Pow2 to `add`/`sub` of exp; NFC

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/test/CodeGen/X86/fold-int-pow2-with-fmul-or-fdiv.ll:4
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK-SSE2,CHECK-AVX2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK-SSE2,CHECK-AVX2,CHECK-AVX512F
+
----------------
RKSimon wrote:
> These prefixes are broken, they should be more like this:
> ```
> ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefixes=CHECK-SSE
> ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK-AVX,CHECK-AVX2
> ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK-AVX,CHECK-AVX512F
> ```
```
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefixes=CHECK-SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK-AVX,CHECK-AVX2
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK-AVX,CHECK-AVX512F,,CHECK-NO-FASTFMA
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=skx -fp-contract=fast | FileCheck %s --check-prefixes=CHECK-AVX,CHECK-AVX512F,CHECK-FMA
```


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D154804/new/

https://reviews.llvm.org/D154804