Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/test/CodeGen/X86/dag-fmf-cse.ll

@@ -1,22 +0,0 @@
-; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=fma -enable-unsafe-fp-math | FileCheck %s
-
-; If fast-math-flags are propagated correctly, the mul1 expression
-; should be recognized as a factor in the last fsub, so we should
-; see a mul and add, not a mul and fma:
-; a * b - (-a * b) ---> (a * b) + (a * b)
-
-define float @fmf_should_not_break_cse(float %a, float %b) {
-; CHECK-LABEL: fmf_should_not_break_cse:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    vmulss %xmm1, %xmm0, %xmm0
-; CHECK-NEXT:    vaddss %xmm0, %xmm0, %xmm0
-; CHECK-NEXT:    retq
-
-  %mul1 = fmul fast float %a, %b
-  %nega = fsub fast float 0.0, %a
-  %mul2 = fmul fast float %nega, %b
-  %abx2 = fsub fast float %mul1, %mul2
-  ret float %abx2
-}
-