; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; 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 }