| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -passes=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 |
| } |
| |