1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -reassociate %s -S | FileCheck %s
3
4define float @foo(float %a,float %b, float %c) {
5; CHECK-LABEL: @foo(
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]]
12;
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
20  ret float %add3
21}
22
23define 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]]
33;
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
41  ret float %add3
42}
43
44