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| author | Artyom Skrobov <Artyom.Skrobov@arm.com> | 2017-03-15 10:19:16 +0000 |
|---|---|---|
| committer | Artyom Skrobov <Artyom.Skrobov@arm.com> | 2017-03-15 10:19:16 +0000 |
| commit | f803e21e4f245453fc3d0cbfac4d2e0fd4d0f7bb (patch) | |
| tree | e919d07be698fd311465d9844f23892e3529bd33 /test/CodeGen/Thumb | |
| parent | 13c7e8f75df823546a5f745603968535cf038417 (diff) | |
[Thumb1] Fix the bug when adding/subtracting -2147483648
Differential Revision: https://reviews.llvm.org/D30829
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297820 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/Thumb')
| -rw-r--r-- | test/CodeGen/Thumb/long.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb/long.ll b/test/CodeGen/Thumb/long.ll index e35f7cc82b1..c549bd425aa 100644 --- a/test/CodeGen/Thumb/long.ll +++ b/test/CodeGen/Thumb/long.ll @@ -194,3 +194,15 @@ entry: ; CHECK: movs r1, r3 } +; "sub 2147483648" has to be lowered into "add -2147483648" +define i64 @f12(i64 %x, i64 %y) { +entry: + %tmp1 = sub i64 %x, 2147483648 + ret i64 %tmp1 +; CHECK-LABEL: f12: +; CHECK: movs r2, #1 +; CHECK: lsls r2, r2, #31 +; CHECK: movs r3, #0 +; CHECK: adds r0, r0, r2 +; CHECK: sbcs r1, r3 +} |