1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes=reassociate %s -S | FileCheck %s
4 define float @foo(float %a,float %b, float %c) {
6 ; CHECK-NEXT: [[MUL3:%.*]] = fmul float [[A:%.*]], [[B:%.*]]
7 ; CHECK-NEXT: [[FACTOR:%.*]] = fmul fast float [[C:%.*]], 2.000000e+00
8 ; CHECK-NEXT: [[REASS_ADD1:%.*]] = fadd fast float [[FACTOR]], [[B]]
9 ; CHECK-NEXT: [[REASS_MUL:%.*]] = fmul fast float [[REASS_ADD1]], [[A]]
10 ; CHECK-NEXT: [[ADD3:%.*]] = fadd fast float [[REASS_MUL]], [[MUL3]]
11 ; CHECK-NEXT: ret float [[ADD3]]
13 %mul1 = fmul fast float %a, %c
14 %mul2 = fmul fast float %a, %b
15 %mul3 = fmul float %a, %b ; STRICT
16 %mul4 = fmul fast float %a, %c
17 %add1 = fadd fast float %mul1, %mul3
18 %add2 = fadd fast float %mul4, %mul2
19 %add3 = fadd fast float %add1, %add2
23 define float @foo_reassoc(float %a,float %b, float %c) {
24 ; CHECK-LABEL: @foo_reassoc(
25 ; CHECK-NEXT: [[MUL1:%.*]] = fmul reassoc float [[A:%.*]], [[C:%.*]]
26 ; CHECK-NEXT: [[MUL2:%.*]] = fmul fast float [[B:%.*]], [[A]]
27 ; CHECK-NEXT: [[MUL3:%.*]] = fmul float [[A]], [[B]]
28 ; CHECK-NEXT: [[MUL4:%.*]] = fmul reassoc float [[A]], [[C]]
29 ; CHECK-NEXT: [[ADD1:%.*]] = fadd fast float [[MUL1]], [[MUL3]]
30 ; CHECK-NEXT: [[ADD2:%.*]] = fadd reassoc float [[MUL2]], [[MUL4]]
31 ; CHECK-NEXT: [[ADD3:%.*]] = fadd fast float [[ADD1]], [[ADD2]]
32 ; CHECK-NEXT: ret float [[ADD3]]
34 %mul1 = fmul reassoc float %a, %c
35 %mul2 = fmul fast float %a, %b
36 %mul3 = fmul float %a, %b ; STRICT
37 %mul4 = fmul reassoc float %a, %c
38 %add1 = fadd fast float %mul1, %mul3
39 %add2 = fadd reassoc float %mul4, %mul2
40 %add3 = fadd fast float %add1, %add2