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198d8baafb
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230786 91177308-0d34-0410-b5e6-96231b3b80d8
139 lines
4.1 KiB
LLVM
139 lines
4.1 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-linux -O0 | FileCheck %s --check-prefix=X64
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; RUN: llc < %s -mtriple=x86_64-windows-itanium -O0 | FileCheck %s --check-prefix=X64
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; RUN: llc < %s -march=x86 -O0 | FileCheck %s --check-prefix=X32
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; GEP indices are interpreted as signed integers, so they
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; should be sign-extended to 64 bits on 64-bit targets.
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; PR3181
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define i32 @test1(i32 %t3, i32* %t1) nounwind {
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%t9 = getelementptr i32, i32* %t1, i32 %t3 ; <i32*> [#uses=1]
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%t15 = load i32* %t9 ; <i32> [#uses=1]
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ret i32 %t15
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; X32-LABEL: test1:
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; X32: movl (%eax,%ecx,4), %eax
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; X32: ret
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; X64-LABEL: test1:
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; X64: movslq %e[[A0:di|cx]], %rax
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; X64: movl (%r[[A1:si|dx]],%rax,4), %eax
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; X64: ret
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}
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define i32 @test2(i64 %t3, i32* %t1) nounwind {
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%t9 = getelementptr i32, i32* %t1, i64 %t3 ; <i32*> [#uses=1]
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%t15 = load i32* %t9 ; <i32> [#uses=1]
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ret i32 %t15
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; X32-LABEL: test2:
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; X32: movl (%edx,%ecx,4), %e
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; X32: ret
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; X64-LABEL: test2:
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; X64: movl (%r[[A1]],%r[[A0]],4), %eax
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; X64: ret
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}
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; PR4984
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define i8 @test3(i8* %start) nounwind {
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entry:
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%A = getelementptr i8, i8* %start, i64 -2 ; <i8*> [#uses=1]
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%B = load i8* %A, align 1 ; <i8> [#uses=1]
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ret i8 %B
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; X32-LABEL: test3:
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; X32: movl 4(%esp), %eax
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; X32: movb -2(%eax), %al
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; X32: ret
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; X64-LABEL: test3:
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; X64: movb -2(%r[[A0]]), %al
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; X64: ret
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}
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define double @test4(i64 %x, double* %p) nounwind {
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entry:
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%x.addr = alloca i64, align 8 ; <i64*> [#uses=2]
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%p.addr = alloca double*, align 8 ; <double**> [#uses=2]
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store i64 %x, i64* %x.addr
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store double* %p, double** %p.addr
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%tmp = load i64* %x.addr ; <i64> [#uses=1]
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%add = add nsw i64 %tmp, 16 ; <i64> [#uses=1]
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%tmp1 = load double** %p.addr ; <double*> [#uses=1]
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%arrayidx = getelementptr inbounds double, double* %tmp1, i64 %add ; <double*> [#uses=1]
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%tmp2 = load double* %arrayidx ; <double> [#uses=1]
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ret double %tmp2
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; X32-LABEL: test4:
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; X32: 128(%e{{.*}},%e{{.*}},8)
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; X64-LABEL: test4:
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; X64: 128(%r{{.*}},%r{{.*}},8)
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}
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; PR8961 - Make sure the sext for the GEP addressing comes before the load that
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; is folded.
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define i64 @test5(i8* %A, i32 %I, i64 %B) nounwind {
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%v8 = getelementptr i8, i8* %A, i32 %I
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%v9 = bitcast i8* %v8 to i64*
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%v10 = load i64* %v9
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%v11 = add i64 %B, %v10
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ret i64 %v11
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; X64-LABEL: test5:
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; X64: movslq %e[[A1]], %rax
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; X64-NEXT: (%r[[A0]],%rax),
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; X64: ret
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}
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; PR9500, rdar://9156159 - Don't do non-local address mode folding,
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; because it may require values which wouldn't otherwise be live out
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; of their blocks.
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define void @test6() {
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if.end: ; preds = %if.then, %invoke.cont
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%tmp15 = load i64* undef
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%dec = add i64 %tmp15, 13
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store i64 %dec, i64* undef
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%call17 = invoke i8* @_ZNK18G__FastAllocString4dataEv()
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to label %invoke.cont16 unwind label %lpad
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invoke.cont16: ; preds = %if.then14
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%arrayidx18 = getelementptr inbounds i8, i8* %call17, i64 %dec
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store i8 0, i8* %arrayidx18
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unreachable
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lpad: ; preds = %if.end19, %if.then14, %if.end, %entry
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%exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
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cleanup
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unreachable
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}
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declare i8* @_ZNK18G__FastAllocString4dataEv() nounwind
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; PR10605 / rdar://9930964 - Don't fold loads incorrectly. The load should
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; happen before the store.
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define i32 @test7({i32,i32,i32}* %tmp1, i32 %tmp71, i32 %tmp63) nounwind {
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; X64-LABEL: test7:
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; X64: movl 8({{%rdi|%rcx}}), %eax
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; X64: movl $4, 8({{%rdi|%rcx}})
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%tmp29 = getelementptr inbounds {i32,i32,i32}, {i32,i32,i32}* %tmp1, i32 0, i32 2
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%tmp30 = load i32* %tmp29, align 4
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%p2 = getelementptr inbounds {i32,i32,i32}, {i32,i32,i32}* %tmp1, i32 0, i32 2
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store i32 4, i32* %p2
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%tmp72 = or i32 %tmp71, %tmp30
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%tmp73 = icmp ne i32 %tmp63, 32
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br i1 %tmp73, label %T, label %F
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T:
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ret i32 %tmp72
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F:
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ret i32 4
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}
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declare i32 @__gxx_personality_v0(...)
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