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llvm-project/llvm/test/Transforms/SCCP/undef-resolve.ll

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Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID This is done to avoid odd test failures, like the one fixed in r171243. My previous regex was not good enough to find these. llvm-svn: 171343
2013-01-01 21:57:25 +08:00
; RUN: opt -sccp -S < %s | FileCheck %s
fix PR6940: sitofp(undef) folds to 0.0, not undef. llvm-svn: 102358
2010-04-27 02:21:23 +08:00
; PR6940
define double @test1() {
%t = sitofp i32 undef to double
ret double %t
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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test1(
fix PR6940: sitofp(undef) folds to 0.0, not undef. llvm-svn: 102358
2010-04-27 02:21:23 +08:00
; CHECK: ret double 0.0
}
fix a SCCP miscompilation that could happen when a forced constant is changed to a constant, we would end up adding the instruction to the wrong worklist, preventing it from being properly revisited. This fixes rdar://7832370 llvm-svn: 100837
2010-04-09 09:14:31 +08:00
; rdar://7832370
; Check that lots of stuff doesn't get turned into undef.
fix PR6940: sitofp(undef) folds to 0.0, not undef. llvm-svn: 102358
2010-04-27 02:21:23 +08:00
define i32 @test2() nounwind readnone ssp {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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: @test2(
fix a SCCP miscompilation that could happen when a forced constant is changed to a constant, we would end up adding the instruction to the wrong worklist, preventing it from being properly revisited. This fixes rdar://7832370 llvm-svn: 100837
2010-04-09 09:14:31 +08:00
init:
br label %control.outer.outer
control.outer.loopexit.us-lcssa: ; preds = %control
br label %control.outer.loopexit
control.outer.loopexit: ; preds = %control.outer.loopexit.us-lcssa.us, %control.outer.loopexit.us-lcssa
br label %control.outer.outer.backedge
control.outer.outer: ; preds = %control.outer.outer.backedge, %init
%switchCond.0.ph.ph = phi i32 [ 2, %init ], [ 3, %control.outer.outer.backedge ] ; <i32> [#uses=2]
%i.0.ph.ph = phi i32 [ undef, %init ], [ %i.0.ph.ph.be, %control.outer.outer.backedge ] ; <i32> [#uses=1]
%tmp4 = icmp eq i32 %i.0.ph.ph, 0 ; <i1> [#uses=1]
br i1 %tmp4, label %control.outer.outer.split.us, label %control.outer.outer.control.outer.outer.split_crit_edge
control.outer.outer.control.outer.outer.split_crit_edge: ; preds = %control.outer.outer
br label %control.outer
control.outer.outer.split.us: ; preds = %control.outer.outer
br label %control.outer.us
control.outer.us: ; preds = %bb3.us, %control.outer.outer.split.us
%A.0.ph.us = phi i32 [ %switchCond.0.us, %bb3.us ], [ 4, %control.outer.outer.split.us ] ; <i32> [#uses=2]
%switchCond.0.ph.us = phi i32 [ %A.0.ph.us, %bb3.us ], [ %switchCond.0.ph.ph, %control.outer.outer.split.us ] ; <i32> [#uses=1]
br label %control.us
bb3.us: ; preds = %control.us
br label %control.outer.us
bb0.us: ; preds = %control.us
br label %control.us
; CHECK: control.us: ; preds = %bb0.us, %control.outer.us
; CHECK-NEXT: %switchCond.0.us = phi i32
; CHECK-NEXT: switch i32 %switchCond.0.us
control.us: ; preds = %bb0.us, %control.outer.us
%switchCond.0.us = phi i32 [ %A.0.ph.us, %bb0.us ], [ %switchCond.0.ph.us, %control.outer.us ] ; <i32> [#uses=2]
switch i32 %switchCond.0.us, label %control.outer.loopexit.us-lcssa.us [
i32 0, label %bb0.us
i32 1, label %bb1.us-lcssa.us
i32 3, label %bb3.us
i32 4, label %bb4.us-lcssa.us
]
control.outer.loopexit.us-lcssa.us: ; preds = %control.us
br label %control.outer.loopexit
bb1.us-lcssa.us: ; preds = %control.us
br label %bb1
bb4.us-lcssa.us: ; preds = %control.us
br label %bb4
control.outer: ; preds = %bb3, %control.outer.outer.control.outer.outer.split_crit_edge
%A.0.ph = phi i32 [ %nextId17, %bb3 ], [ 4, %control.outer.outer.control.outer.outer.split_crit_edge ] ; <i32> [#uses=1]
%switchCond.0.ph = phi i32 [ 0, %bb3 ], [ %switchCond.0.ph.ph, %control.outer.outer.control.outer.outer.split_crit_edge ] ; <i32> [#uses=1]
br label %control
control: ; preds = %bb0, %control.outer
%switchCond.0 = phi i32 [ %A.0.ph, %bb0 ], [ %switchCond.0.ph, %control.outer ] ; <i32> [#uses=2]
switch i32 %switchCond.0, label %control.outer.loopexit.us-lcssa [
i32 0, label %bb0
i32 1, label %bb1.us-lcssa
i32 3, label %bb3
i32 4, label %bb4.us-lcssa
]
bb4.us-lcssa: ; preds = %control
br label %bb4
bb4: ; preds = %bb4.us-lcssa, %bb4.us-lcssa.us
br label %control.outer.outer.backedge
control.outer.outer.backedge: ; preds = %bb4, %control.outer.loopexit
%i.0.ph.ph.be = phi i32 [ 1, %bb4 ], [ 0, %control.outer.loopexit ] ; <i32> [#uses=1]
br label %control.outer.outer
bb3: ; preds = %control
%nextId17 = add i32 %switchCond.0, -2 ; <i32> [#uses=1]
br label %control.outer
bb0: ; preds = %control
br label %control
bb1.us-lcssa: ; preds = %control
br label %bb1
bb1: ; preds = %bb1.us-lcssa, %bb1.us-lcssa.us
ret i32 0
}
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; Make sure SCCP honors the xor "idiom"
; rdar://9956541
define i32 @test3() {
%t = xor i32 undef, undef
ret i32 %t
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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test3(
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; CHECK: ret i32 0
}
; Be conservative with FP ops
define double @test4(double %x) {
%t = fadd double %x, undef
ret double %t
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test4(
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; CHECK: fadd double %x, undef
}
; Make sure casts produce a possible value
define i32 @test5() {
%t = sext i8 undef to i32
ret i32 %t
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test5(
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; CHECK: ret i32 0
}
; Make sure ashr produces a possible value
define i32 @test6() {
%t = ashr i32 undef, 31
ret i32 %t
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test6(
[SCCP] Make sure SCCP and ConstantFolding agree on undef >> a. Currently SCCP folds the value to -1, while ConstantProp folds to 0. This changes SCCP to do what ConstantFolding does. llvm-svn: 289147
2016-12-09 06:28:53 +08:00
; CHECK: ret i32 0
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
}
; Make sure lshr produces a possible value
define i32 @test7() {
%t = lshr i32 undef, 31
ret i32 %t
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test7(
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; CHECK: ret i32 0
}
; icmp eq with undef simplifies to undef
define i1 @test8() {
%t = icmp eq i32 undef, -1
ret i1 %t
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test8(
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; CHECK: ret i1 undef
}
; Make sure we don't conclude that relational comparisons simplify to undef
define i1 @test9() {
%t = icmp ugt i32 undef, -1
ret i1 %t
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test9(
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop making random bad assumptions about instructions which are not explicitly listed. Includes fix for rdar://9956541, a version of "undef ^ undef should return 0 because it's easier than arguing with users". llvm-svn: 137777
2011-08-17 06:06:31 +08:00
; CHECK: icmp ugt
}
Silly mistake from r137777; restore significant isStructTy() checks. While here, be a bit more defensive with unknown instructions. Fixes PR10687. llvm-svn: 137836
2011-08-18 02:10:43 +08:00
; Make sure we handle extractvalue
define i64 @test10() {
entry:
%e = extractvalue { i64, i64 } undef, 1
ret i64 %e
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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: @test10(
Silly mistake from r137777; restore significant isStructTy() checks. While here, be a bit more defensive with unknown instructions. Fixes PR10687. llvm-svn: 137836
2011-08-18 02:10:43 +08:00
; CHECK: ret i64 undef
}
[SCCP] Don't assume all Constants are ConstantInt This fixes PR28269. llvm-svn: 273521
2016-06-23 08:14:29 +08:00
@GV = external global i32
define i32 @test11(i1 %tobool) {
entry:
%shr4 = ashr i32 undef, zext (i1 icmp eq (i32* bitcast (i32 (i1)* @test11 to i32*), i32* @GV) to i32)
ret i32 %shr4
; CHECK-LABEL: @test11(
[SCCP] Make sure SCCP and ConstantFolding agree on undef >> a. Currently SCCP folds the value to -1, while ConstantProp folds to 0. This changes SCCP to do what ConstantFolding does. llvm-svn: 289147
2016-12-09 06:28:53 +08:00
; CHECK: ret i32 0
[SCCP] Don't assume all Constants are ConstantInt This fixes PR28269. llvm-svn: 273521
2016-06-23 08:14:29 +08:00
}