llvm-project/llvm/test/Transforms/SimplifyCFG/2005-12-03-IncorrectPHIFold.ll

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; Make sure this doesn't turn into an infinite loop
; RUN: opt < %s -simplifycfg -constprop -simplifycfg | llvm-dis | FileCheck %s
%struct.anon = type { i32, i32, i32, i32, [1024 x i8] }
@_zero_ = external global %struct.anon* ; <%struct.anon**> [#uses=2]
@_one_ = external global %struct.anon* ; <%struct.anon**> [#uses=4]
@str = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=0]
declare i32 @bc_compare(%struct.anon*, %struct.anon*)
declare void @free_num(%struct.anon**)
declare %struct.anon* @copy_num(%struct.anon*)
declare void @init_num(%struct.anon**)
declare %struct.anon* @new_num(i32, i32)
declare void @int2num(%struct.anon**, i32)
declare void @bc_multiply(%struct.anon*, %struct.anon*, %struct.anon**, i32)
declare void @bc_raise(%struct.anon*, %struct.anon*, %struct.anon**, i32)
declare i32 @bc_divide(%struct.anon*, %struct.anon*, %struct.anon**, i32)
declare void @bc_add(%struct.anon*, %struct.anon*, %struct.anon**)
declare i32 @_do_compare(%struct.anon*, %struct.anon*, i32, i32)
declare i32 @printf(i8*, ...)
define i32 @bc_sqrt(%struct.anon** %num, i32 %scale) {
entry:
%guess = alloca %struct.anon* ; <%struct.anon**> [#uses=7]
%guess1 = alloca %struct.anon* ; <%struct.anon**> [#uses=7]
%point5 = alloca %struct.anon* ; <%struct.anon**> [#uses=3]
%tmp = load %struct.anon*, %struct.anon** %num ; <%struct.anon*> [#uses=1]
%tmp1 = load %struct.anon*, %struct.anon** @_zero_ ; <%struct.anon*> [#uses=1]
%tmp.upgrd.1 = call i32 @bc_compare( %struct.anon* %tmp, %struct.anon* %tmp1 ) ; <i32> [#uses=2]
%tmp.upgrd.2 = icmp slt i32 %tmp.upgrd.1, 0 ; <i1> [#uses=1]
br i1 %tmp.upgrd.2, label %cond_true, label %cond_false
cond_true: ; preds = %entry
ret i32 0
cond_false: ; preds = %entry
%tmp5 = icmp eq i32 %tmp.upgrd.1, 0 ; <i1> [#uses=1]
br i1 %tmp5, label %cond_true6, label %cond_next13
cond_true6: ; preds = %cond_false
call void @free_num( %struct.anon** %num )
%tmp8 = load %struct.anon*, %struct.anon** @_zero_ ; <%struct.anon*> [#uses=1]
%tmp9 = call %struct.anon* @copy_num( %struct.anon* %tmp8 ) ; <%struct.anon*> [#uses=1]
store %struct.anon* %tmp9, %struct.anon** %num
ret i32 1
cond_next13: ; preds = %cond_false
%tmp15 = load %struct.anon*, %struct.anon** %num ; <%struct.anon*> [#uses=1]
%tmp16 = load %struct.anon*, %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
%tmp17 = call i32 @bc_compare( %struct.anon* %tmp15, %struct.anon* %tmp16 ) ; <i32> [#uses=2]
%tmp19 = icmp eq i32 %tmp17, 0 ; <i1> [#uses=1]
br i1 %tmp19, label %cond_true20, label %cond_next27
cond_true20: ; preds = %cond_next13
call void @free_num( %struct.anon** %num )
%tmp22 = load %struct.anon*, %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
%tmp23 = call %struct.anon* @copy_num( %struct.anon* %tmp22 ) ; <%struct.anon*> [#uses=1]
store %struct.anon* %tmp23, %struct.anon** %num
ret i32 1
cond_next27: ; preds = %cond_next13
%tmp29 = load %struct.anon*, %struct.anon** %num ; <%struct.anon*> [#uses=1]
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction One of several parallel first steps to remove the target type of pointers, replacing them with a single opaque pointer type. This adds an explicit type parameter to the gep instruction so that when the first parameter becomes an opaque pointer type, the type to gep through is still available to the instructions. * This doesn't modify gep operators, only instructions (operators will be handled separately) * Textual IR changes only. Bitcode (including upgrade) and changing the in-memory representation will be in separate changes. * geps of vectors are transformed as: getelementptr <4 x float*> %x, ... ->getelementptr float, <4 x float*> %x, ... Then, once the opaque pointer type is introduced, this will ultimately look like: getelementptr float, <4 x ptr> %x with the unambiguous interpretation that it is a vector of pointers to float. * address spaces remain on the pointer, not the type: getelementptr float addrspace(1)* %x ->getelementptr float, float addrspace(1)* %x Then, eventually: getelementptr float, ptr addrspace(1) %x Importantly, the massive amount of test case churn has been automated by same crappy python code. I had to manually update a few test cases that wouldn't fit the script's model (r228970,r229196,r229197,r229198). The python script just massages stdin and writes the result to stdout, I then wrapped that in a shell script to handle replacing files, then using the usual find+xargs to migrate all the files. update.py: import fileinput import sys import re ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") def conv(match, line): if not match: return line line = match.groups()[0] if len(match.groups()[5]) == 0: line += match.groups()[2] line += match.groups()[3] line += ", " line += match.groups()[1] line += "\n" return line for line in sys.stdin: if line.find("getelementptr ") == line.find("getelementptr inbounds"): if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("): line = conv(re.match(ibrep, line), line) elif line.find("getelementptr ") != line.find("getelementptr ("): line = conv(re.match(normrep, line), line) sys.stdout.write(line) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh After that, check-all (with llvm, clang, clang-tools-extra, lld, compiler-rt, and polly all checked out). The extra 'rm' in the apply.sh script is due to a few files in clang's test suite using interesting unicode stuff that my python script was throwing exceptions on. None of those files needed to be migrated, so it seemed sufficient to ignore those cases. Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7636 llvm-svn: 230786
2015-02-28 03:29:02 +08:00
%tmp30 = getelementptr %struct.anon, %struct.anon* %tmp29, i32 0, i32 2 ; <i32*> [#uses=1]
%tmp31 = load i32, i32* %tmp30 ; <i32> [#uses=2]
%tmp33 = icmp sge i32 %tmp31, %scale ; <i1> [#uses=1]
%max = select i1 %tmp33, i32 %tmp31, i32 %scale ; <i32> [#uses=4]
%tmp35 = add i32 %max, 2 ; <i32> [#uses=0]
call void @init_num( %struct.anon** %guess )
call void @init_num( %struct.anon** %guess1 )
%tmp36 = call %struct.anon* @new_num( i32 1, i32 1 ) ; <%struct.anon*> [#uses=2]
store %struct.anon* %tmp36, %struct.anon** %point5
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction One of several parallel first steps to remove the target type of pointers, replacing them with a single opaque pointer type. This adds an explicit type parameter to the gep instruction so that when the first parameter becomes an opaque pointer type, the type to gep through is still available to the instructions. * This doesn't modify gep operators, only instructions (operators will be handled separately) * Textual IR changes only. Bitcode (including upgrade) and changing the in-memory representation will be in separate changes. * geps of vectors are transformed as: getelementptr <4 x float*> %x, ... ->getelementptr float, <4 x float*> %x, ... Then, once the opaque pointer type is introduced, this will ultimately look like: getelementptr float, <4 x ptr> %x with the unambiguous interpretation that it is a vector of pointers to float. * address spaces remain on the pointer, not the type: getelementptr float addrspace(1)* %x ->getelementptr float, float addrspace(1)* %x Then, eventually: getelementptr float, ptr addrspace(1) %x Importantly, the massive amount of test case churn has been automated by same crappy python code. I had to manually update a few test cases that wouldn't fit the script's model (r228970,r229196,r229197,r229198). The python script just massages stdin and writes the result to stdout, I then wrapped that in a shell script to handle replacing files, then using the usual find+xargs to migrate all the files. update.py: import fileinput import sys import re ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") def conv(match, line): if not match: return line line = match.groups()[0] if len(match.groups()[5]) == 0: line += match.groups()[2] line += match.groups()[3] line += ", " line += match.groups()[1] line += "\n" return line for line in sys.stdin: if line.find("getelementptr ") == line.find("getelementptr inbounds"): if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("): line = conv(re.match(ibrep, line), line) elif line.find("getelementptr ") != line.find("getelementptr ("): line = conv(re.match(normrep, line), line) sys.stdout.write(line) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh After that, check-all (with llvm, clang, clang-tools-extra, lld, compiler-rt, and polly all checked out). The extra 'rm' in the apply.sh script is due to a few files in clang's test suite using interesting unicode stuff that my python script was throwing exceptions on. None of those files needed to be migrated, so it seemed sufficient to ignore those cases. Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7636 llvm-svn: 230786
2015-02-28 03:29:02 +08:00
%tmp.upgrd.3 = getelementptr %struct.anon, %struct.anon* %tmp36, i32 0, i32 4, i32 1 ; <i8*> [#uses=1]
store i8 5, i8* %tmp.upgrd.3
%tmp39 = icmp slt i32 %tmp17, 0 ; <i1> [#uses=1]
br i1 %tmp39, label %cond_true40, label %cond_false43
cond_true40: ; preds = %cond_next27
%tmp41 = load %struct.anon*, %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
%tmp42 = call %struct.anon* @copy_num( %struct.anon* %tmp41 ) ; <%struct.anon*> [#uses=1]
store %struct.anon* %tmp42, %struct.anon** %guess
br label %bb80.outer
cond_false43: ; preds = %cond_next27
call void @int2num( %struct.anon** %guess, i32 10 )
%tmp45 = load %struct.anon*, %struct.anon** %num ; <%struct.anon*> [#uses=1]
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction One of several parallel first steps to remove the target type of pointers, replacing them with a single opaque pointer type. This adds an explicit type parameter to the gep instruction so that when the first parameter becomes an opaque pointer type, the type to gep through is still available to the instructions. * This doesn't modify gep operators, only instructions (operators will be handled separately) * Textual IR changes only. Bitcode (including upgrade) and changing the in-memory representation will be in separate changes. * geps of vectors are transformed as: getelementptr <4 x float*> %x, ... ->getelementptr float, <4 x float*> %x, ... Then, once the opaque pointer type is introduced, this will ultimately look like: getelementptr float, <4 x ptr> %x with the unambiguous interpretation that it is a vector of pointers to float. * address spaces remain on the pointer, not the type: getelementptr float addrspace(1)* %x ->getelementptr float, float addrspace(1)* %x Then, eventually: getelementptr float, ptr addrspace(1) %x Importantly, the massive amount of test case churn has been automated by same crappy python code. I had to manually update a few test cases that wouldn't fit the script's model (r228970,r229196,r229197,r229198). The python script just massages stdin and writes the result to stdout, I then wrapped that in a shell script to handle replacing files, then using the usual find+xargs to migrate all the files. update.py: import fileinput import sys import re ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") def conv(match, line): if not match: return line line = match.groups()[0] if len(match.groups()[5]) == 0: line += match.groups()[2] line += match.groups()[3] line += ", " line += match.groups()[1] line += "\n" return line for line in sys.stdin: if line.find("getelementptr ") == line.find("getelementptr inbounds"): if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("): line = conv(re.match(ibrep, line), line) elif line.find("getelementptr ") != line.find("getelementptr ("): line = conv(re.match(normrep, line), line) sys.stdout.write(line) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh After that, check-all (with llvm, clang, clang-tools-extra, lld, compiler-rt, and polly all checked out). The extra 'rm' in the apply.sh script is due to a few files in clang's test suite using interesting unicode stuff that my python script was throwing exceptions on. None of those files needed to be migrated, so it seemed sufficient to ignore those cases. Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7636 llvm-svn: 230786
2015-02-28 03:29:02 +08:00
%tmp46 = getelementptr %struct.anon, %struct.anon* %tmp45, i32 0, i32 1 ; <i32*> [#uses=1]
%tmp47 = load i32, i32* %tmp46 ; <i32> [#uses=1]
call void @int2num( %struct.anon** %guess1, i32 %tmp47 )
%tmp48 = load %struct.anon*, %struct.anon** %guess1 ; <%struct.anon*> [#uses=1]
%tmp49 = load %struct.anon*, %struct.anon** %point5 ; <%struct.anon*> [#uses=1]
call void @bc_multiply( %struct.anon* %tmp48, %struct.anon* %tmp49, %struct.anon** %guess1, i32 %max )
%tmp51 = load %struct.anon*, %struct.anon** %guess1 ; <%struct.anon*> [#uses=1]
[opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction One of several parallel first steps to remove the target type of pointers, replacing them with a single opaque pointer type. This adds an explicit type parameter to the gep instruction so that when the first parameter becomes an opaque pointer type, the type to gep through is still available to the instructions. * This doesn't modify gep operators, only instructions (operators will be handled separately) * Textual IR changes only. Bitcode (including upgrade) and changing the in-memory representation will be in separate changes. * geps of vectors are transformed as: getelementptr <4 x float*> %x, ... ->getelementptr float, <4 x float*> %x, ... Then, once the opaque pointer type is introduced, this will ultimately look like: getelementptr float, <4 x ptr> %x with the unambiguous interpretation that it is a vector of pointers to float. * address spaces remain on the pointer, not the type: getelementptr float addrspace(1)* %x ->getelementptr float, float addrspace(1)* %x Then, eventually: getelementptr float, ptr addrspace(1) %x Importantly, the massive amount of test case churn has been automated by same crappy python code. I had to manually update a few test cases that wouldn't fit the script's model (r228970,r229196,r229197,r229198). The python script just massages stdin and writes the result to stdout, I then wrapped that in a shell script to handle replacing files, then using the usual find+xargs to migrate all the files. update.py: import fileinput import sys import re ibrep = re.compile(r"(^.*?[^%\w]getelementptr inbounds )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") normrep = re.compile( r"(^.*?[^%\w]getelementptr )(((?:<\d* x )?)(.*?)(| addrspace\(\d\)) *\*(|>)(?:$| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$))") def conv(match, line): if not match: return line line = match.groups()[0] if len(match.groups()[5]) == 0: line += match.groups()[2] line += match.groups()[3] line += ", " line += match.groups()[1] line += "\n" return line for line in sys.stdin: if line.find("getelementptr ") == line.find("getelementptr inbounds"): if line.find("getelementptr inbounds") != line.find("getelementptr inbounds ("): line = conv(re.match(ibrep, line), line) elif line.find("getelementptr ") != line.find("getelementptr ("): line = conv(re.match(normrep, line), line) sys.stdout.write(line) apply.sh: for name in "$@" do python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name" rm -f "$name.tmp" done The actual commands: From llvm/src: find test/ -name *.ll | xargs ./apply.sh From llvm/src/tools/clang: find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}" From llvm/src/tools/polly: find test/ -name *.ll | xargs ./apply.sh After that, check-all (with llvm, clang, clang-tools-extra, lld, compiler-rt, and polly all checked out). The extra 'rm' in the apply.sh script is due to a few files in clang's test suite using interesting unicode stuff that my python script was throwing exceptions on. None of those files needed to be migrated, so it seemed sufficient to ignore those cases. Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7636 llvm-svn: 230786
2015-02-28 03:29:02 +08:00
%tmp52 = getelementptr %struct.anon, %struct.anon* %tmp51, i32 0, i32 2 ; <i32*> [#uses=1]
store i32 0, i32* %tmp52
%tmp53 = load %struct.anon*, %struct.anon** %guess ; <%struct.anon*> [#uses=1]
%tmp54 = load %struct.anon*, %struct.anon** %guess1 ; <%struct.anon*> [#uses=1]
call void @bc_raise( %struct.anon* %tmp53, %struct.anon* %tmp54, %struct.anon** %guess, i32 %max )
br label %bb80.outer
bb80.outer: ; preds = %cond_true83, %cond_false43, %cond_true40
%done.1.ph = phi i32 [ 1, %cond_true83 ], [ 0, %cond_true40 ], [ 0, %cond_false43 ] ; <i32> [#uses=1]
br label %bb80
bb80: ; preds = %cond_true83, %bb80.outer
%tmp82 = icmp eq i32 %done.1.ph, 0 ; <i1> [#uses=1]
br i1 %tmp82, label %cond_true83, label %bb86
cond_true83: ; preds = %bb80
%tmp71 = call i32 @_do_compare( %struct.anon* null, %struct.anon* null, i32 0, i32 1 ) ; <i32> [#uses=1]
%tmp76 = icmp eq i32 %tmp71, 0 ; <i1> [#uses=1]
br i1 %tmp76, label %bb80.outer, label %bb80
; CHECK: bb86
bb86: ; preds = %bb80
call void @free_num( %struct.anon** %num )
%tmp88 = load %struct.anon*, %struct.anon** %guess ; <%struct.anon*> [#uses=1]
%tmp89 = load %struct.anon*, %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
%tmp92 = call i32 @bc_divide( %struct.anon* %tmp88, %struct.anon* %tmp89, %struct.anon** %num, i32 %max ) ; <i32> [#uses=0]
call void @free_num( %struct.anon** %guess )
call void @free_num( %struct.anon** %guess1 )
call void @free_num( %struct.anon** %point5 )
ret i32 1
}