third_party/llvm-7.0/llvm/test/Transforms/Reassociate/mixed-fast-nonfast-fp.ll

; RUN: opt -reassociate %s -S | FileCheck %s

define float @foo(float %a,float %b, float %c) {
; CHECK-LABEL: @foo(
; CHECK-NEXT:    [[MUL3:%.*]] = fmul float %a, %b
; CHECK-NEXT:    [[FACTOR:%.*]] = fmul fast float %c, 2.000000e+00
; CHECK-NEXT:    [[REASS_ADD1:%.*]] = fadd fast float [[FACTOR]], %b
; CHECK-NEXT:    [[REASS_MUL:%.*]] = fmul fast float [[REASS_ADD1]], %a
; CHECK-NEXT:    [[ADD3:%.*]] = fadd fast float [[REASS_MUL]], [[MUL3]]
; CHECK-NEXT:    ret float [[ADD3]]
;
  %mul1 = fmul fast float %a, %c
  %mul2 = fmul fast float %a, %b
  %mul3 = fmul float %a, %b   ; STRICT
  %mul4 = fmul fast float %a, %c
  %add1 = fadd fast  float %mul1, %mul3
  %add2 = fadd fast float %mul4, %mul2
  %add3 = fadd fast float %add1, %add2
  ret float %add3
}

define float @foo_reassoc(float %a,float %b, float %c) {
; CHECK-LABEL: @foo_reassoc(
; CHECK-NEXT:    [[MUL1:%.*]] = fmul reassoc float %a, %c
; CHECK-NEXT:    [[MUL2:%.*]] = fmul fast float %b, %a
; CHECK-NEXT:    [[MUL3:%.*]] = fmul float %a, %b
; CHECK-NEXT:    [[MUL4:%.*]] = fmul reassoc float %a, %c
; CHECK-NEXT:    [[ADD1:%.*]] = fadd fast float [[MUL1]], [[MUL3]]
; CHECK-NEXT:    [[ADD2:%.*]] = fadd reassoc float [[MUL2]], [[MUL4]]
; CHECK-NEXT:    [[ADD3:%.*]] = fadd fast float [[ADD1]], [[ADD2]]
; CHECK-NEXT:    ret float [[ADD3]]
;
  %mul1 = fmul reassoc float %a, %c
  %mul2 = fmul fast float %a, %b
  %mul3 = fmul float %a, %b   ; STRICT
  %mul4 = fmul reassoc float %a, %c
  %add1 = fadd fast  float %mul1, %mul3
  %add2 = fadd reassoc float %mul4, %mul2
  %add3 = fadd fast float %add1, %add2
  ret float %add3
}