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llvm-project/llvm/test/Transforms/InstCombine/objsize-64.ll

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hopefully fix the buildbots: some tests have wrong definitions of malloc and were crashing this code on 64 bits machines llvm-svn: 158923
2012-06-22 00:47:58 +08:00
; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
declare noalias i8* @malloc(i32) nounwind
Add support for invoke to the MemoryBuiltin analysid. Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). llvm-svn: 158937
2012-06-22 05:25:05 +08:00
declare noalias i8* @_Znwm(i64) ; new(unsigned long)
declare i32 @__gxx_personality_v0(...)
declare void @__cxa_call_unexpected(i8*)
hopefully fix the buildbots: some tests have wrong definitions of malloc and were crashing this code on 64 bits machines llvm-svn: 158923
2012-06-22 00:47:58 +08:00
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readonly
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: @f1(
teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) llvm-svn: 159876
2012-07-07 07:09:25 +08:00
define i64 @f1(i8 **%esc) {
hopefully fix the buildbots: some tests have wrong definitions of malloc and were crashing this code on 64 bits machines llvm-svn: 158923
2012-06-22 00:47:58 +08:00
%call = call i8* @malloc(i32 4)
teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) llvm-svn: 159876
2012-07-07 07:09:25 +08:00
store i8* %call, i8** %esc
hopefully fix the buildbots: some tests have wrong definitions of malloc and were crashing this code on 64 bits machines llvm-svn: 158923
2012-06-22 00:47:58 +08:00
%size = call i64 @llvm.objectsize.i64(i8* %call, i1 false)
teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) llvm-svn: 159876
2012-07-07 07:09:25 +08:00
; CHECK: ret i64 4
hopefully fix the buildbots: some tests have wrong definitions of malloc and were crashing this code on 64 bits machines llvm-svn: 158923
2012-06-22 00:47:58 +08:00
ret i64 %size
}
Add support for invoke to the MemoryBuiltin analysid. Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). llvm-svn: 158937
2012-06-22 05:25:05 +08:00
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: @f2(
Move the personality function from LandingPadInst to Function The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 llvm-svn: 239940
2015-06-18 04:52:32 +08:00
define i64 @f2(i8** %esc) nounwind uwtable ssp personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
Add support for invoke to the MemoryBuiltin analysid. Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). llvm-svn: 158937
2012-06-22 05:25:05 +08:00
entry:
teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) llvm-svn: 159876
2012-07-07 07:09:25 +08:00
; CHECK: invoke noalias i8* @_Znwm(i64 13)
Add support for invoke to the MemoryBuiltin analysid. Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). llvm-svn: 158937
2012-06-22 05:25:05 +08:00
%call = invoke noalias i8* @_Znwm(i64 13)
to label %invoke.cont unwind label %lpad
invoke.cont:
Revert 179071 because it is not the right way to support non standard new/new[] operators. llvm-svn: 179084
2013-04-09 12:43:46 +08:00
; CHECK: ret i64 13
teach instcombine to remove allocated buffers even if there are stores, memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) llvm-svn: 159876
2012-07-07 07:09:25 +08:00
store i8* %call, i8** %esc
Add support for invoke to the MemoryBuiltin analysid. Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). llvm-svn: 158937
2012-06-22 05:25:05 +08:00
%0 = tail call i64 @llvm.objectsize.i64(i8* %call, i1 false)
ret i64 %0
lpad:
Move the personality function from LandingPadInst to Function The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 llvm-svn: 239940
2015-06-18 04:52:32 +08:00
%1 = landingpad { i8*, i32 }
Add support for invoke to the MemoryBuiltin analysid. Update comments accordingly. Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached). llvm-svn: 158937
2012-06-22 05:25:05 +08:00
filter [0 x i8*] zeroinitializer
%2 = extractvalue { i8*, i32 } %1, 0
tail call void @__cxa_call_unexpected(i8* %2) noreturn nounwind
unreachable
}