1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -reassociate -S | FileCheck %s 3 4; Check that a*a*b+a*a*c is turned into a*(a*(b+c)). 5 6define float @fmultistep1(float %a, float %b, float %c) { 7; CHECK-LABEL: @fmultistep1( 8; CHECK-NEXT: [[REASS_ADD1:%.*]] = fadd fast float [[C:%.*]], [[B:%.*]] 9; CHECK-NEXT: [[REASS_MUL2:%.*]] = fmul fast float [[A:%.*]], [[A]] 10; CHECK-NEXT: [[REASS_MUL:%.*]] = fmul fast float [[REASS_MUL2]], [[REASS_ADD1]] 11; CHECK-NEXT: ret float [[REASS_MUL]] 12; 13 %t0 = fmul fast float %a, %b 14 %t1 = fmul fast float %a, %t0 ; a*(a*b) 15 %t2 = fmul fast float %a, %c 16 %t3 = fmul fast float %a, %t2 ; a*(a*c) 17 %t4 = fadd fast float %t1, %t3 18 ret float %t4 19} 20 21; Check that a*b+a*c+d is turned into a*(b+c)+d. 22 23define float @fmultistep2(float %a, float %b, float %c, float %d) { 24; CHECK-LABEL: @fmultistep2( 25; CHECK-NEXT: [[REASS_ADD:%.*]] = fadd fast float [[C:%.*]], [[B:%.*]] 26; CHECK-NEXT: [[REASS_MUL:%.*]] = fmul fast float [[REASS_ADD]], [[A:%.*]] 27; CHECK-NEXT: [[T3:%.*]] = fadd fast float [[REASS_MUL]], [[D:%.*]] 28; CHECK-NEXT: ret float [[T3]] 29; 30 %t0 = fmul fast float %a, %b 31 %t1 = fmul fast float %a, %c 32 %t2 = fadd fast float %t1, %d ; a*c+d 33 %t3 = fadd fast float %t0, %t2 ; a*b+(a*c+d) 34 ret float %t3 35} 36 37