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llvm-mirror/test/CodeGen/X86/bswap.ll
Stephen Lin 7e501cf4c3 Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.
This update was done with the following bash script:

  find test/CodeGen -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc.*debug" $NAME; then
      TEMP=`mktemp -t temp`
      cp $NAME $TEMP
      sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
      while read FUNC; do
        sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP
      done
      sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP
      sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP
      sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP
      sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP
      mv $TEMP $NAME
    fi
  done

llvm-svn: 186280
2013-07-14 06:24:09 +00:00

60 lines
1.3 KiB
LLVM

; bswap should be constant folded when it is passed a constant argument
; RUN: llc < %s -march=x86 -mcpu=i686 | FileCheck %s
declare i16 @llvm.bswap.i16(i16)
declare i32 @llvm.bswap.i32(i32)
declare i64 @llvm.bswap.i64(i64)
define i16 @W(i16 %A) {
; CHECK-LABEL: W:
; CHECK: rolw $8, %ax
%Z = call i16 @llvm.bswap.i16( i16 %A ) ; <i16> [#uses=1]
ret i16 %Z
}
define i32 @X(i32 %A) {
; CHECK-LABEL: X:
; CHECK: bswapl %eax
%Z = call i32 @llvm.bswap.i32( i32 %A ) ; <i32> [#uses=1]
ret i32 %Z
}
define i64 @Y(i64 %A) {
; CHECK-LABEL: Y:
; CHECK: bswapl %eax
; CHECK: bswapl %edx
%Z = call i64 @llvm.bswap.i64( i64 %A ) ; <i64> [#uses=1]
ret i64 %Z
}
; rdar://9164521
define i32 @test1(i32 %a) nounwind readnone {
entry:
; CHECK: test1
; CHECK: bswapl %eax
; CHECK: shrl $16, %eax
%and = lshr i32 %a, 8
%shr3 = and i32 %and, 255
%and2 = shl i32 %a, 8
%shl = and i32 %and2, 65280
%or = or i32 %shr3, %shl
ret i32 %or
}
define i32 @test2(i32 %a) nounwind readnone {
entry:
; CHECK: test2
; CHECK: bswapl %eax
; CHECK: sarl $16, %eax
%and = lshr i32 %a, 8
%shr4 = and i32 %and, 255
%and2 = shl i32 %a, 8
%or = or i32 %shr4, %and2
%sext = shl i32 %or, 16
%conv3 = ashr exact i32 %sext, 16
ret i32 %conv3
}