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| author | David Majnemer <david.majnemer@gmail.com> | 2013-05-02 02:44:23 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2013-05-02 02:44:23 +0000 |
| commit | 304099a56d61c2132bd101ca669003e509ca1dcb (patch) | |
| tree | c2d95b89542b9ea90aa01f52387de342a7bfdb7f /test | |
| parent | d4201b6e76bad9cb3fb8a20e3c04555d97deb0fd (diff) | |
Add a test for the foldSelectICmpAndOr fix committed in r180779.
This tests a case where C1 and C2 were the same but X and Y were different
widths.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180907 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/select.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/select.ll b/test/Transforms/InstCombine/select.ll index 08487a3696..c72a6f7c49 100644 --- a/test/Transforms/InstCombine/select.ll +++ b/test/Transforms/InstCombine/select.ll @@ -915,6 +915,19 @@ define i32 @select_icmp_eq_and_4096_0_or_4096(i32 %x, i32 %y) { ret i32 %select } +; CHECK: @select_icmp_eq_0_and_1_or_1 +; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i64 %x, 1 +; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = trunc i64 [[AND]] to i32 +; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 [[XOR]], %y +; CHECK-NEXT: ret i32 [[OR]] +define i32 @select_icmp_eq_0_and_1_or_1(i64 %x, i32 %y) { + %and = and i64 %x, 1 + %cmp = icmp eq i64 %and, 0 + %or = or i32 %y, 1 + %select = select i1 %cmp, i32 %y, i32 %or + ret i32 %select +} + ; CHECK: @select_icmp_ne_0_and_4096_or_32 ; CHECK-NEXT: [[LSHR:%[a-z0-9]+]] = lshr i32 %x, 7 ; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 [[LSHR]], 32 |