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llvm-mirror/test/Transforms/SimplifyCFG/speculate-with-offset.ll

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Factor out Instruction::isSafeToSpeculativelyExecute's code for testing for dereferenceable pointers into a helper function, isDereferenceablePointer. Teach it how to reason about GEPs with simple non-zero indices. Also eliminate ArgumentPromtion's IsAlwaysValidPointer, which didn't check for weak externals or out of range gep indices. llvm-svn: 118840
2010-11-11 22:23:25 +01:00
; RUN: opt -simplifycfg -S < %s | FileCheck %s
; This load is safe to speculate, as it's from a safe offset
; within an alloca.
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 $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @yes(
Factor out Instruction::isSafeToSpeculativelyExecute's code for testing for dereferenceable pointers into a helper function, isDereferenceablePointer. Teach it how to reason about GEPs with simple non-zero indices. Also eliminate ArgumentPromtion's IsAlwaysValidPointer, which didn't check for weak externals or out of range gep indices. llvm-svn: 118840
2010-11-11 22:23:25 +01:00
; CHECK-NOT: br
define void @yes(i1 %c) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 3
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @no0(
Factor out Instruction::isSafeToSpeculativelyExecute's code for testing for dereferenceable pointers into a helper function, isDereferenceablePointer. Teach it how to reason about GEPs with simple non-zero indices. Also eliminate ArgumentPromtion's IsAlwaysValidPointer, which didn't check for weak externals or out of range gep indices. llvm-svn: 118840
2010-11-11 22:23:25 +01:00
; CHECK: br i1 %c
define void @no0(i1 %c) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 4
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @no1(
Factor out Instruction::isSafeToSpeculativelyExecute's code for testing for dereferenceable pointers into a helper function, isDereferenceablePointer. Teach it how to reason about GEPs with simple non-zero indices. Also eliminate ArgumentPromtion's IsAlwaysValidPointer, which didn't check for weak externals or out of range gep indices. llvm-svn: 118840
2010-11-11 22:23:25 +01:00
; CHECK: br i1 %c
define void @no1(i1 %c, i64 %n) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 %n
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 03:42:54 +02:00
; CHECK-LABEL: @no2(
Factor out Instruction::isSafeToSpeculativelyExecute's code for testing for dereferenceable pointers into a helper function, isDereferenceablePointer. Teach it how to reason about GEPs with simple non-zero indices. Also eliminate ArgumentPromtion's IsAlwaysValidPointer, which didn't check for weak externals or out of range gep indices. llvm-svn: 118840
2010-11-11 22:23:25 +01:00
; CHECK: br i1 %c
define void @no2(i1 %c, i64 %n) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*]* %a, i64 1, i64 0
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
declare void @frob(i64** nocapture %p)
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