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llvm-project/llvm/test/Transforms/InstCombine/2010-11-01-lshr-mask.ll

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When folding away a (shl (shr)) pair, we need to check that the bits that will BECOME the low bits are zero, not that the current low bits are zero. Fixes <rdar://problem/8606771>. llvm-svn: 117953
2010-11-02 05:08:20 +08:00
; RUN: opt -instcombine -S < %s | FileCheck %s
Really check that the bits that will become zero are actually already zero before eliminating the operation that zeros them. This fixes rdar://8739316. llvm-svn: 121353
2010-12-09 10:52:17 +08:00
; <rdar://problem/8606771>
[InstCombine] auto-generate complete test checks; NFC llvm-svn: 319203
2017-11-29 03:07:28 +08:00
define i32 @main(i32 %argc) {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc" $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 mv $TEMP $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @main(
Revert commit rL323951 Looks like it's causing timeouts out on at least ppc64le buildbots. llvm-svn: 323959
2018-02-01 21:05:25 +08:00
; CHECK-NEXT: [[TMP3151:%.*]] = trunc i32 %argc to i8
; CHECK-NEXT: [[TMP1:%.*]] = shl i8 [[TMP3151]], 5
; CHECK-NEXT: [[TMP4126:%.*]] = and i8 [[TMP1]], 64
; CHECK-NEXT: [[TMP4127:%.*]] = xor i8 [[TMP4126]], 64
; CHECK-NEXT: [[TMP4086:%.*]] = zext i8 [[TMP4127]] to i32
[InstCombine] auto-generate complete test checks; NFC llvm-svn: 319203
2017-11-29 03:07:28 +08:00
; CHECK-NEXT: ret i32 [[TMP4086]]
;
When folding away a (shl (shr)) pair, we need to check that the bits that will BECOME the low bits are zero, not that the current low bits are zero. Fixes <rdar://problem/8606771>. llvm-svn: 117953
2010-11-02 05:08:20 +08:00
%tmp3151 = trunc i32 %argc to i8
%tmp3161 = or i8 %tmp3151, -17
%tmp3162 = and i8 %tmp3151, 122
%tmp3163 = xor i8 %tmp3162, -17
%tmp4114 = shl i8 %tmp3163, 6
%tmp4115 = xor i8 %tmp4114, %tmp3163
%tmp4120 = xor i8 %tmp3161, %tmp4115
%tmp4126 = lshr i8 %tmp4120, 7
%tmp4127 = mul i8 %tmp4126, 64
%tmp4086 = zext i8 %tmp4127 to i32
ret i32 %tmp4086
}
Really check that the bits that will become zero are actually already zero before eliminating the operation that zeros them. This fixes rdar://8739316. llvm-svn: 121353
2010-12-09 10:52:17 +08:00
; rdar://8739316
[InstCombine] auto-generate complete test checks; NFC llvm-svn: 319203
2017-11-29 03:07:28 +08:00
define i8 @foo(i8 %arg, i8 %arg1) {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc" $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 mv $TEMP $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @foo(
[InstCombine] auto-generate complete test checks; NFC llvm-svn: 319203
2017-11-29 03:07:28 +08:00
; CHECK-NEXT: [[TMP:%.*]] = shl i8 %arg, 7
; CHECK-NEXT: [[TMP2:%.*]] = and i8 %arg1, 84
; CHECK-NEXT: [[TMP3:%.*]] = and i8 %arg1, -118
; CHECK-NEXT: [[TMP4:%.*]] = and i8 %arg1, 33
; CHECK-NEXT: [[TMP5:%.*]] = sub nsw i8 40, [[TMP2]]
; CHECK-NEXT: [[TMP6:%.*]] = and i8 [[TMP5]], 84
; CHECK-NEXT: [[TMP7:%.*]] = or i8 [[TMP4]], [[TMP6]]
; CHECK-NEXT: [[TMP8:%.*]] = xor i8 [[TMP]], [[TMP3]]
; CHECK-NEXT: [[TMP9:%.*]] = or i8 [[TMP7]], [[TMP8]]
; CHECK-NEXT: [[TMP10:%.*]] = lshr i8 [[TMP8]], 7
; CHECK-NEXT: [[TMP11:%.*]] = shl nuw nsw i8 [[TMP10]], 5
; CHECK-NEXT: [[TMP12:%.*]] = xor i8 [[TMP11]], [[TMP9]]
; CHECK-NEXT: ret i8 [[TMP12]]
;
Really check that the bits that will become zero are actually already zero before eliminating the operation that zeros them. This fixes rdar://8739316. llvm-svn: 121353
2010-12-09 10:52:17 +08:00
%tmp = shl i8 %arg, 7
%tmp2 = and i8 %arg1, 84
%tmp3 = and i8 %arg1, -118
%tmp4 = and i8 %arg1, 33
%tmp5 = sub i8 -88, %tmp2
%tmp6 = and i8 %tmp5, 84
%tmp7 = or i8 %tmp4, %tmp6
%tmp8 = xor i8 %tmp, %tmp3
%tmp9 = or i8 %tmp7, %tmp8
%tmp10 = lshr i8 %tmp8, 7
%tmp11 = shl i8 %tmp10, 5
%tmp12 = xor i8 %tmp11, %tmp9
ret i8 %tmp12
}
[InstCombine] auto-generate complete test checks; NFC llvm-svn: 319203
2017-11-29 03:07:28 +08:00