view test/CodeGen/X86/zext-shl.ll @ 33:e4204d083e25

LLVM 3.5
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 14:32:10 +0900
parents 95c75e76d11b
children 803732b1fca8
line wrap: on
line source

; RUN: llc < %s -march=x86 | FileCheck %s

define i32 @t1(i8 zeroext %x) nounwind readnone ssp {
entry:
; CHECK-LABEL: 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-LABEL: 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
}