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Diffstat (limited to 'test/CodeGen/X86/zext-shl.ll')
-rw-r--r-- | test/CodeGen/X86/zext-shl.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGen/X86/zext-shl.ll b/test/CodeGen/X86/zext-shl.ll new file mode 100644 index 0000000..bc3198a --- /dev/null +++ b/test/CodeGen/X86/zext-shl.ll @@ -0,0 +1,38 @@ +; RUN: llc < %s -march=x86 | FileCheck %s + +define i32 @t1(i8 zeroext %x) nounwind readnone ssp { +entry: +; CHECK: t1: +; CHECK: shll +; CHECK-NOT: movzwl +; CHECK: ret + %0 = zext i8 %x to i16 + %1 = shl i16 %0, 5 + %2 = zext i16 %1 to i32 + ret i32 %2 +} + +define i32 @t2(i8 zeroext %x) nounwind readnone ssp { +entry: +; CHECK: t2: +; CHECK: shrl +; CHECK-NOT: movzwl +; CHECK: ret + %0 = zext i8 %x to i16 + %1 = lshr i16 %0, 3 + %2 = zext i16 %1 to i32 + ret i32 %2 +} + +define i32 @t3(i8 zeroext %x, i8 zeroext %y) nounwind readnone ssp { +entry: +; CHECK: t3: +; CHECK: shll +; CHECK-NOT: movzwl +; CHECK: ret + %0 = zext i8 %x to i16 + %1 = zext i8 %y to i16 + %2 = shl i16 %0, %1 + %3 = zext i16 %2 to i32 + ret i32 %3 +} |