1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -reassociate -S | FileCheck %s
4 ; Check that a*a*b+a*a*c is turned into a*(a*(b+c)).
6 define i64 @multistep1(i64 %a, i64 %b, i64 %c) {
7 ; CHECK-LABEL: @multistep1(
8 ; CHECK-NEXT: [[REASS_ADD1:%.*]] = add i64 [[C:%.*]], [[B:%.*]]
9 ; CHECK-NEXT: [[REASS_MUL2:%.*]] = mul i64 [[A:%.*]], [[A]]
10 ; CHECK-NEXT: [[REASS_MUL:%.*]] = mul i64 [[REASS_MUL2]], [[REASS_ADD1]]
11 ; CHECK-NEXT: ret i64 [[REASS_MUL]]
14 %t1 = mul i64 %a, %t0 ; a*(a*b)
16 %t3 = mul i64 %a, %t2 ; a*(a*c)
17 %t4 = add i64 %t1, %t3
21 ; Check that a*b+a*c+d is turned into a*(b+c)+d.
23 define i64 @multistep2(i64 %a, i64 %b, i64 %c, i64 %d) {
24 ; CHECK-LABEL: @multistep2(
25 ; CHECK-NEXT: [[REASS_ADD:%.*]] = add i64 [[C:%.*]], [[B:%.*]]
26 ; CHECK-NEXT: [[REASS_MUL:%.*]] = mul i64 [[REASS_ADD]], [[A:%.*]]
27 ; CHECK-NEXT: [[T3:%.*]] = add i64 [[REASS_MUL]], [[D:%.*]]
28 ; CHECK-NEXT: ret i64 [[T3]]
32 %t2 = add i64 %t1, %d ; a*c+d
33 %t3 = add i64 %t0, %t2 ; a*b+(a*c+d)