diff options
Diffstat (limited to 'test/CodeGen')
-rw-r--r-- | test/CodeGen/ARM/rev.ll | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/test/CodeGen/ARM/rev.ll b/test/CodeGen/ARM/rev.ll index 687bf88..4170ff3 100644 --- a/test/CodeGen/ARM/rev.ll +++ b/test/CodeGen/ARM/rev.ll @@ -1,6 +1,6 @@ ; RUN: llc < %s -march=arm -mattr=+v6 | FileCheck %s -define i32 @test1(i32 %X) { +define i32 @test1(i32 %X) nounwind { ; CHECK: test1 ; CHECK: rev16 r0, r0 %tmp1 = lshr i32 %X, 8 @@ -16,7 +16,7 @@ define i32 @test1(i32 %X) { ret i32 %tmp14 } -define i32 @test2(i32 %X) { +define i32 @test2(i32 %X) nounwind { ; CHECK: test2 ; CHECK: revsh r0, r0 %tmp1 = lshr i32 %X, 8 @@ -28,3 +28,29 @@ define i32 @test2(i32 %X) { %tmp5.upgrd.2 = sext i16 %tmp5 to i32 ret i32 %tmp5.upgrd.2 } + +; rdar://9147637 +define i32 @test3(i16 zeroext %a) nounwind { +entry: +; CHECK: test3: +; CHECK: revsh r0, r0 + %0 = tail call i16 @llvm.bswap.i16(i16 %a) + %1 = sext i16 %0 to i32 + ret i32 %1 +} + +declare i16 @llvm.bswap.i16(i16) nounwind readnone + +define i32 @test4(i16 zeroext %a) nounwind { +entry: +; CHECK: test4: +; CHECK: revsh r0, r0 + %conv = zext i16 %a to i32 + %shr9 = lshr i16 %a, 8 + %conv2 = zext i16 %shr9 to i32 + %shl = shl nuw nsw i32 %conv, 8 + %or = or i32 %conv2, %shl + %sext = shl i32 %or, 16 + %conv8 = ashr exact i32 %sext, 16 + ret i32 %conv8 +} |