1 ; NOTE: Assertions have been autogenerated by update_test_checks.py
2 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 define void @hang_2002-03-11(i32 %X) {
5 ; CHECK-LABEL: @hang_2002-03-11(
8 %reg117 = add i32 %X, 0
12 ; Instcombine was missing a test that caused it to make illegal transformations
13 ; sometimes. In this case, it transformed the sub into an add:
15 define i32 @sub_failure_2002-05-14(i32 %i, i32 %j) {
16 ; CHECK-LABEL: @sub_failure_2002-05-14(
17 ; CHECK-NEXT: [[A:%.*]] = mul i32 %i, %j
18 ; CHECK-NEXT: [[B:%.*]] = sub i32 2, [[A]]
19 ; CHECK-NEXT: ret i32 [[B]]
26 ; This testcase was incorrectly getting completely eliminated. There should be
27 ; SOME instruction named %c here, even if it's a bitwise and.
29 define i64 @cast_test_2002-08-02(i64 %A) {
30 ; CHECK-LABEL: @cast_test_2002-08-02(
31 ; CHECK-NEXT: [[C2:%.*]] = and i64 %A, 255
32 ; CHECK-NEXT: ret i64 [[C2]]
34 %c1 = trunc i64 %A to i8
35 %c2 = zext i8 %c1 to i64
39 define i32 @missed_const_prop_2002-12-05(i32 %A) {
40 ; CHECK-LABEL: @missed_const_prop_2002-12-05(
41 ; CHECK-NEXT: ret i32 0
43 %A.neg = sub i32 0, %A
46 %Y.neg.ra = add i32 %A, %X
47 %r = add i32 %A.neg, %Y.neg.ra