1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S < %s -passes=instcombine | FileCheck %s
5 ; sub (select %Cond, %TrueVal, %FalseVal), %Op1
7 ; select %Cond, (sub %TrueVal, %Op1), (sub %FalseVal, %Op1)
9 ; https://bugs.llvm.org/show_bug.cgi?id=44426
13 define i8 @t0_sub_of_trueval(i1 %c, i8 %Op1, i8 %FalseVal) {
14 ; CHECK-LABEL: @t0_sub_of_trueval(
15 ; CHECK-NEXT: [[TMP1:%.*]] = sub i8 [[FALSEVAL:%.*]], [[OP1:%.*]]
16 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i8 0, i8 [[TMP1]], !prof [[PROF0:![0-9]+]]
17 ; CHECK-NEXT: ret i8 [[R]]
19 %o = select i1 %c, i8 %Op1, i8 %FalseVal, !prof !0 ; while there, ensure preservation of prof md
23 define i8 @t1_sub_of_falseval(i1 %c, i8 %TrueVal, i8 %Op1) {
24 ; CHECK-LABEL: @t1_sub_of_falseval(
25 ; CHECK-NEXT: [[TMP1:%.*]] = sub i8 [[TRUEVAL:%.*]], [[OP1:%.*]]
26 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i8 [[TMP1]], i8 0, !prof [[PROF0]]
27 ; CHECK-NEXT: ret i8 [[R]]
29 %o = select i1 %c, i8 %TrueVal, i8 %Op1, !prof !0 ; while there, ensure preservation of prof md
36 define <2 x i8> @t2_vec(i1 %c, <2 x i8> %Op1, <2 x i8> %FalseVal) {
37 ; CHECK-LABEL: @t2_vec(
38 ; CHECK-NEXT: [[TMP1:%.*]] = sub <2 x i8> [[FALSEVAL:%.*]], [[OP1:%.*]]
39 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], <2 x i8> zeroinitializer, <2 x i8> [[TMP1]]
40 ; CHECK-NEXT: ret <2 x i8> [[R]]
42 %o = select i1 %c, <2 x i8> %Op1, <2 x i8> %FalseVal
43 %r = sub <2 x i8> %o, %Op1
49 declare void @use8(i8)
51 define i8 @n3_extrause(i1 %c, i8 %Op1, i8 %FalseVal) {
52 ; CHECK-LABEL: @n3_extrause(
53 ; CHECK-NEXT: [[O:%.*]] = select i1 [[C:%.*]], i8 [[OP1:%.*]], i8 [[FALSEVAL:%.*]]
54 ; CHECK-NEXT: call void @use8(i8 [[O]])
55 ; CHECK-NEXT: [[R:%.*]] = sub i8 [[O]], [[OP1]]
56 ; CHECK-NEXT: ret i8 [[R]]
58 %o = select i1 %c, i8 %Op1, i8 %FalseVal
59 call void @use8(i8 %o)
66 define i8 @n4_wrong_hands(i1 %c, i8 %TrueVal, i8 %FalseVal, i8 %Op1) {
67 ; CHECK-LABEL: @n4_wrong_hands(
68 ; CHECK-NEXT: [[O:%.*]] = select i1 [[C:%.*]], i8 [[TRUEVAL:%.*]], i8 [[FALSEVAL:%.*]]
69 ; CHECK-NEXT: [[R:%.*]] = sub i8 [[O]], [[OP1:%.*]]
70 ; CHECK-NEXT: ret i8 [[R]]
72 %o = select i1 %c, i8 %TrueVal, i8 %FalseVal ; none of the hands is %Op1
77 ; CHECK: !0 = !{!"branch_weights", i32 0, i32 100}
78 !0 = !{!"branch_weights", i32 0, i32 100}