llvm-project/llvm/test/CodeGen/X86/tailcall-64.ll

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; RUN: llc -mtriple=x86_64-apple-macosx -mcpu=core2 < %s | FileCheck %s
declare i64 @testi()
define i64 @test_trivial() {
%A = tail call i64 @testi()
ret i64 %A
}
; CHECK-LABEL: test_trivial:
; CHECK: jmp _testi ## TAILCALL
define i64 @test_noop_bitcast() {
%A = tail call i64 @testi()
%B = bitcast i64 %A to i64
ret i64 %B
}
; CHECK-LABEL: test_noop_bitcast:
; CHECK: jmp _testi ## TAILCALL
; Tail call shouldn't be blocked by no-op inttoptr.
define i8* @test_inttoptr() {
%A = tail call i64 @testi()
%B = inttoptr i64 %A to i8*
ret i8* %B
}
; CHECK-LABEL: test_inttoptr:
; CHECK: jmp _testi ## TAILCALL
declare <4 x float> @testv()
define <4 x i32> @test_vectorbitcast() {
%A = tail call <4 x float> @testv()
%B = bitcast <4 x float> %A to <4 x i32>
ret <4 x i32> %B
}
; CHECK-LABEL: test_vectorbitcast:
; CHECK: jmp _testv ## TAILCALL
declare { i64, i64 } @testp()
define {i64, i64} @test_pair_trivial() {
%A = tail call { i64, i64} @testp()
ret { i64, i64} %A
}
; CHECK-LABEL: test_pair_trivial:
; CHECK: jmp _testp ## TAILCALL
define {i64, i64} @test_pair_notail() {
%A = tail call i64 @testi()
%b = insertvalue {i64, i64} undef, i64 %A, 0
%c = insertvalue {i64, i64} %b, i64 %A, 1
ret { i64, i64} %c
}
; CHECK-LABEL: test_pair_notail:
; CHECK-NOT: jmp _testi
define {i64, i64} @test_pair_extract_trivial() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%y = extractvalue { i64, i64} %A, 1
%b = insertvalue {i64, i64} undef, i64 %x, 0
%c = insertvalue {i64, i64} %b, i64 %y, 1
ret { i64, i64} %c
}
; CHECK-LABEL: test_pair_extract_trivial:
; CHECK: jmp _testp ## TAILCALL
define {i64, i64} @test_pair_extract_notail() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%y = extractvalue { i64, i64} %A, 1
%b = insertvalue {i64, i64} undef, i64 %y, 0
%c = insertvalue {i64, i64} %b, i64 %x, 1
ret { i64, i64} %c
}
; CHECK-LABEL: test_pair_extract_notail:
; CHECK-NOT: jmp _testp
define {i8*, i64} @test_pair_extract_conv() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%y = extractvalue { i64, i64} %A, 1
%x1 = inttoptr i64 %x to i8*
%b = insertvalue {i8*, i64} undef, i8* %x1, 0
%c = insertvalue {i8*, i64} %b, i64 %y, 1
ret { i8*, i64} %c
}
; CHECK-LABEL: test_pair_extract_conv:
; CHECK: jmp _testp ## TAILCALL
define {i64, i64} @test_pair_extract_multiple() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%y = extractvalue { i64, i64} %A, 1
%b = insertvalue {i64, i64} undef, i64 %x, 0
%c = insertvalue {i64, i64} %b, i64 %y, 1
%x1 = extractvalue { i64, i64} %b, 0
%y1 = extractvalue { i64, i64} %c, 1
%d = insertvalue {i64, i64} undef, i64 %x1, 0
%e = insertvalue {i64, i64} %b, i64 %y1, 1
ret { i64, i64} %e
}
; CHECK-LABEL: test_pair_extract_multiple:
; CHECK: jmp _testp ## TAILCALL
define {i64, i64} @test_pair_extract_undef() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%b = insertvalue {i64, i64} undef, i64 %x, 0
ret { i64, i64} %b
}
; CHECK-LABEL: test_pair_extract_undef:
; CHECK: jmp _testp ## TAILCALL
declare { i64, { i32, i32 } } @testn()
define {i64, {i32, i32}} @test_nest() {
%A = tail call { i64, { i32, i32 } } @testn()
%x = extractvalue { i64, { i32, i32}} %A, 0
%y = extractvalue { i64, { i32, i32}} %A, 1
%y1 = extractvalue { i32, i32} %y, 0
%y2 = extractvalue { i32, i32} %y, 1
%b = insertvalue {i64, {i32, i32}} undef, i64 %x, 0
%c1 = insertvalue {i32, i32} undef, i32 %y1, 0
%c2 = insertvalue {i32, i32} %c1, i32 %y2, 1
%c = insertvalue {i64, {i32, i32}} %b, {i32, i32} %c2, 1
ret { i64, { i32, i32}} %c
}
; CHECK-LABEL: test_nest:
; CHECK: jmp _testn ## TAILCALL
%struct.A = type { i32 }
%struct.B = type { %struct.A, i32 }
declare %struct.B* @testu()
define %struct.A* @test_upcast() {
entry:
%A = tail call %struct.B* @testu()
[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
%x = getelementptr inbounds %struct.B, %struct.B* %A, i32 0, i32 0
ret %struct.A* %x
}
; CHECK-LABEL: test_upcast:
; CHECK: jmp _testu ## TAILCALL
; PR13006
define { i64, i64 } @crash(i8* %this) {
%c = tail call { i64, i64 } @testp()
%mrv7 = insertvalue { i64, i64 } %c, i64 undef, 1
ret { i64, i64 } %mrv7
}
; Check that we can fold an indexed load into a tail call instruction.
; CHECK: fold_indexed_load
; CHECK: leaq (%rsi,%rsi,4), %[[RAX:r..]]
; CHECK: jmpq *16(%{{r..}},%[[RAX]],8) ## TAILCALL
%struct.funcs = type { i32 (i8*, i32*, i32)*, i32 (i8*)*, i32 (i8*)*, i32 (i8*, i32)*, i32 }
@func_table = external global [0 x %struct.funcs]
define void @fold_indexed_load(i8* %mbstr, i64 %idxprom) nounwind uwtable ssp {
entry:
[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
%dsplen = getelementptr inbounds [0 x %struct.funcs], [0 x %struct.funcs]* @func_table, i64 0, i64 %idxprom, i32 2
%x1 = load i32 (i8*)** %dsplen, align 8
%call = tail call i32 %x1(i8* %mbstr) nounwind
ret void
}
; <rdar://problem/12282281> Fold an indexed load into the tail call instruction.
; Calling a varargs function with 6 arguments requires 7 registers (%al is the
; vector count for varargs functions). This leaves %r11 as the only available
; scratch register.
;
; It is not possible to fold an indexed load into TCRETURNmi64 in that case.
;
; typedef int (*funcptr)(void*, ...);
; extern const funcptr funcs[];
; int f(int n) {
; return funcs[n](0, 0, 0, 0, 0, 0);
; }
;
; CHECK-LABEL: rdar12282281
; CHECK: jmpq *%r11 ## TAILCALL
@funcs = external constant [0 x i32 (i8*, ...)*]
define i32 @rdar12282281(i32 %n) nounwind uwtable ssp {
entry:
%idxprom = sext i32 %n to i64
[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
%arrayidx = getelementptr inbounds [0 x i32 (i8*, ...)*], [0 x i32 (i8*, ...)*]* @funcs, i64 0, i64 %idxprom
%0 = load i32 (i8*, ...)** %arrayidx, align 8
%call = tail call i32 (i8*, ...)* %0(i8* null, i32 0, i32 0, i32 0, i32 0, i32 0) nounwind
ret i32 %call
}
define x86_fp80 @fp80_call(x86_fp80 %x) nounwind {
entry:
; CHECK-LABEL: fp80_call:
; CHECK: jmp _fp80_callee
%call = tail call x86_fp80 @fp80_callee(x86_fp80 %x) nounwind
ret x86_fp80 %call
}
declare x86_fp80 @fp80_callee(x86_fp80)
; rdar://12229511
define x86_fp80 @trunc_fp80(x86_fp80 %x) nounwind {
entry:
; CHECK-LABEL: trunc_fp80
; CHECK: callq _trunc
; CHECK-NOT: jmp _trunc
; CHECK: ret
%conv = fptrunc x86_fp80 %x to double
%call = tail call double @trunc(double %conv) nounwind readnone
%conv1 = fpext double %call to x86_fp80
ret x86_fp80 %conv1
}
declare double @trunc(double) nounwind readnone