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0d99339102
llvm-mirror/test/CodeGen/X86/sibcall.ll
David Blaikie 0d99339102 [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
2015-02-27 19:29:02 +00:00

411 lines
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; RUN: llc < %s -mtriple=i686-linux -mcpu=core2 -mattr=+sse2 -asm-verbose=false | FileCheck %s -check-prefix=32
; RUN: llc < %s -mtriple=x86_64-linux -mcpu=core2 -mattr=+sse2 -asm-verbose=false | FileCheck %s -check-prefix=64
; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -mcpu=core2 -mattr=+sse2 -asm-verbose=false | FileCheck %s -check-prefix=X32ABI
define void @t1(i32 %x) nounwind ssp {
entry:
; 32-LABEL: t1:
; 32: jmp {{_?}}foo
; 64-LABEL: t1:
; 64: jmp {{_?}}foo
; X32ABI-LABEL: t1:
; X32ABI: jmp {{_?}}foo
tail call void @foo() nounwind
ret void
}
declare void @foo()
define void @t2() nounwind ssp {
entry:
; 32-LABEL: t2:
; 32: jmp {{_?}}foo2
; 64-LABEL: t2:
; 64: jmp {{_?}}foo2
; X32ABI-LABEL: t2:
; X32ABI: jmp {{_?}}foo2
%0 = tail call i32 @foo2() nounwind
ret void
}
declare i32 @foo2()
define void @t3() nounwind ssp {
entry:
; 32-LABEL: t3:
; 32: jmp {{_?}}foo3
; 64-LABEL: t3:
; 64: jmp {{_?}}foo3
; X32ABI-LABEL: t3:
; X32ABI: jmp {{_?}}foo3
%0 = tail call i32 @foo3() nounwind
ret void
}
declare i32 @foo3()
define void @t4(void (i32)* nocapture %x) nounwind ssp {
entry:
; 32-LABEL: t4:
; 32: calll *
; FIXME: gcc can generate a tailcall for this. But it's tricky.
; 64-LABEL: t4:
; 64-NOT: call
; 64: jmpq *
; X32ABI-LABEL: t4:
; X32ABI-NOT: call
; X32ABI: jmpq *
tail call void %x(i32 0) nounwind
ret void
}
define void @t5(void ()* nocapture %x) nounwind ssp {
entry:
; 32-LABEL: t5:
; 32-NOT: call
; 32: jmpl *4(%esp)
; 64-LABEL: t5:
; 64-NOT: call
; 64: jmpq *%rdi
; X32ABI-LABEL: t5:
; X32ABI-NOT: call
; FIXME: This isn't needed since x32 psABI specifies that callers must
; zero-extend pointers passed in registers.
; X32ABI: movl %edi, %eax
; X32ABI: jmpq *%rax
tail call void %x() nounwind
ret void
}
define i32 @t6(i32 %x) nounwind ssp {
entry:
; 32-LABEL: t6:
; 32: calll {{_?}}t6
; 32: jmp {{_?}}bar
; 64-LABEL: t6:
; 64: jmp {{_?}}t6
; 64: jmp {{_?}}bar
; X32ABI-LABEL: t6:
; X32ABI: jmp {{_?}}t6
; X32ABI: jmp {{_?}}bar
%0 = icmp slt i32 %x, 10
br i1 %0, label %bb, label %bb1
bb:
%1 = add nsw i32 %x, -1
%2 = tail call i32 @t6(i32 %1) nounwind ssp
ret i32 %2
bb1:
%3 = tail call i32 @bar(i32 %x) nounwind
ret i32 %3
}
declare i32 @bar(i32)
define i32 @t7(i32 %a, i32 %b, i32 %c) nounwind ssp {
entry:
; 32-LABEL: t7:
; 32: jmp {{_?}}bar2
; 64-LABEL: t7:
; 64: jmp {{_?}}bar2
; X32ABI-LABEL: t7:
; X32ABI: jmp {{_?}}bar2
%0 = tail call i32 @bar2(i32 %a, i32 %b, i32 %c) nounwind
ret i32 %0
}
declare i32 @bar2(i32, i32, i32)
define signext i16 @t8() nounwind ssp {
entry:
; 32-LABEL: t8:
; 32: jmp {{_?}}bar3
; 64-LABEL: t8:
; 64: jmp {{_?}}bar3
; X32ABI-LABEL: t8:
; X32ABI: jmp {{_?}}bar3
%0 = tail call signext i16 @bar3() nounwind ; <i16> [#uses=1]
ret i16 %0
}
declare signext i16 @bar3()
define signext i16 @t9(i32 (i32)* nocapture %x) nounwind ssp {
entry:
; 32-LABEL: t9:
; 32: calll *
; 64-LABEL: t9:
; 64: jmpq *
; X32ABI-LABEL: t9:
; X32ABI: jmpq *
%0 = bitcast i32 (i32)* %x to i16 (i32)*
%1 = tail call signext i16 %0(i32 0) nounwind
ret i16 %1
}
define void @t10() nounwind ssp {
entry:
; 32-LABEL: t10:
; 32: calll
; 64-LABEL: t10:
; 64: callq
; X32ABI-LABEL: t10:
; X32ABI: callq
%0 = tail call i32 @foo4() noreturn nounwind
unreachable
}
declare i32 @foo4()
define i32 @t11(i32 %x, i32 %y, i32 %z.0, i32 %z.1, i32 %z.2) nounwind ssp {
; In 32-bit mode, it's emitting a bunch of dead loads that are not being
; eliminated currently.
; 32-LABEL: t11:
; 32-NOT: subl ${{[0-9]+}}, %esp
; 32: je
; 32-NOT: movl
; 32-NOT: addl ${{[0-9]+}}, %esp
; 32: jmp {{_?}}foo5
; 64-LABEL: t11:
; 64-NOT: subq ${{[0-9]+}}, %rsp
; 64-NOT: addq ${{[0-9]+}}, %rsp
; 64: jmp {{_?}}foo5
; X32ABI-LABEL: t11:
; X32ABI-NOT: subl ${{[0-9]+}}, %esp
; X32ABI-NOT: addl ${{[0-9]+}}, %esp
; X32ABI: jmp {{_?}}foo5
entry:
%0 = icmp eq i32 %x, 0
br i1 %0, label %bb6, label %bb
bb:
%1 = tail call i32 @foo5(i32 %x, i32 %y, i32 %z.0, i32 %z.1, i32 %z.2) nounwind
ret i32 %1
bb6:
ret i32 0
}
declare i32 @foo5(i32, i32, i32, i32, i32)
%struct.t = type { i32, i32, i32, i32, i32 }
define i32 @t12(i32 %x, i32 %y, %struct.t* byval align 4 %z) nounwind ssp {
; 32-LABEL: t12:
; 32-NOT: subl ${{[0-9]+}}, %esp
; 32-NOT: addl ${{[0-9]+}}, %esp
; 32: jmp {{_?}}foo6
; 64-LABEL: t12:
; 64-NOT: subq ${{[0-9]+}}, %rsp
; 64-NOT: addq ${{[0-9]+}}, %rsp
; 64: jmp {{_?}}foo6
; X32ABI-LABEL: t12:
; X32ABI-NOT: subl ${{[0-9]+}}, %esp
; X32ABI-NOT: addl ${{[0-9]+}}, %esp
; X32ABI: jmp {{_?}}foo6
entry:
%0 = icmp eq i32 %x, 0
br i1 %0, label %bb2, label %bb
bb:
%1 = tail call i32 @foo6(i32 %x, i32 %y, %struct.t* byval align 4 %z) nounwind
ret i32 %1
bb2:
ret i32 0
}
declare i32 @foo6(i32, i32, %struct.t* byval align 4)
; rdar://r7717598
%struct.ns = type { i32, i32 }
%struct.cp = type { float, float, float, float, float }
define %struct.ns* @t13(%struct.cp* %yy) nounwind ssp {
; 32-LABEL: t13:
; 32-NOT: jmp
; 32: calll
; 32: ret
; 64-LABEL: t13:
; 64-NOT: jmp
; 64: callq
; 64: ret
; X32ABI-LABEL: t13:
; X32ABI-NOT: jmp
; X32ABI: callq
; X32ABI: ret
entry:
%0 = tail call fastcc %struct.ns* @foo7(%struct.cp* byval align 4 %yy, i8 signext 0) nounwind
ret %struct.ns* %0
}
; rdar://6195379
; llvm can't do sibcall for this in 32-bit mode (yet).
declare fastcc %struct.ns* @foo7(%struct.cp* byval align 4, i8 signext) nounwind ssp
%struct.__block_descriptor = type { i64, i64 }
%struct.__block_descriptor_withcopydispose = type { i64, i64, i8*, i8* }
%struct.__block_literal_1 = type { i8*, i32, i32, i8*, %struct.__block_descriptor* }
%struct.__block_literal_2 = type { i8*, i32, i32, i8*, %struct.__block_descriptor_withcopydispose*, void ()* }
define void @t14(%struct.__block_literal_2* nocapture %.block_descriptor) nounwind ssp {
entry:
; 64-LABEL: t14:
; 64: movq 32(%rdi)
; 64-NOT: movq 16(%rdi)
; 64: jmpq *16({{%rdi|%rax}})
; X32ABI-LABEL: t14:
; X32ABI: movl 20(%edi), %edi
; X32ABI-NEXT: movl 12(%edi), %eax
; X32ABI-NEXT: jmpq *%rax
%0 = getelementptr inbounds %struct.__block_literal_2, %struct.__block_literal_2* %.block_descriptor, i64 0, i32 5 ; <void ()**> [#uses=1]
%1 = load void ()** %0, align 8 ; <void ()*> [#uses=2]
%2 = bitcast void ()* %1 to %struct.__block_literal_1* ; <%struct.__block_literal_1*> [#uses=1]
%3 = getelementptr inbounds %struct.__block_literal_1, %struct.__block_literal_1* %2, i64 0, i32 3 ; <i8**> [#uses=1]
%4 = load i8** %3, align 8 ; <i8*> [#uses=1]
%5 = bitcast i8* %4 to void (i8*)* ; <void (i8*)*> [#uses=1]
%6 = bitcast void ()* %1 to i8* ; <i8*> [#uses=1]
tail call void %5(i8* %6) nounwind
ret void
}
; rdar://7726868
%struct.foo = type { [4 x i32] }
define void @t15(%struct.foo* noalias sret %agg.result) nounwind {
; 32-LABEL: t15:
; 32: calll {{_?}}f
; 32: retl $4
; 64-LABEL: t15:
; 64: callq {{_?}}f
; 64: retq
; X32ABI-LABEL: t15:
; X32ABI: callq {{_?}}f
; X32ABI: retq
tail call fastcc void @f(%struct.foo* noalias sret %agg.result) nounwind
ret void
}
declare void @f(%struct.foo* noalias sret) nounwind
define void @t16() nounwind ssp {
entry:
; 32-LABEL: t16:
; 32: calll {{_?}}bar4
; 32: fstp
; 64-LABEL: t16:
; 64: jmp {{_?}}bar4
; X32ABI-LABEL: t16:
; X32ABI: jmp {{_?}}bar4
%0 = tail call double @bar4() nounwind
ret void
}
declare double @bar4()
; rdar://6283267
define void @t17() nounwind ssp {
entry:
; 32-LABEL: t17:
; 32: jmp {{_?}}bar5
; 64-LABEL: t17:
; 64: xorl %eax, %eax
; 64: jmp {{_?}}bar5
; X32ABI-LABEL: t17:
; X32ABI: xorl %eax, %eax
; X32ABI: jmp {{_?}}bar5
tail call void (...)* @bar5() nounwind
ret void
}
declare void @bar5(...)
; rdar://7774847
define void @t18() nounwind ssp {
entry:
; 32-LABEL: t18:
; 32: calll {{_?}}bar6
; 32: fstp %st(0)
; 64-LABEL: t18:
; 64: xorl %eax, %eax
; 64: jmp {{_?}}bar6
; X32ABI-LABEL: t18:
; X32ABI: xorl %eax, %eax
; X32ABI: jmp {{_?}}bar6
%0 = tail call double (...)* @bar6() nounwind
ret void
}
declare double @bar6(...)
define void @t19() alignstack(32) nounwind {
entry:
; CHECK-LABEL: t19:
; CHECK: andl $-32
; CHECK: calll {{_?}}foo
; X32ABI-LABEL: t19:
; X32ABI: andl $-32
; X32ABI: callq {{_?}}foo
tail call void @foo() nounwind
ret void
}
; If caller / callee calling convention mismatch then check if the return
; values are returned in the same registers.
; rdar://7874780
define double @t20(double %x) nounwind {
entry:
; 32-LABEL: t20:
; 32: calll {{_?}}foo20
; 32: fldl (%esp)
; 64-LABEL: t20:
; 64: jmp {{_?}}foo20
; X32ABI-LABEL: t20:
; X32ABI: jmp {{_?}}foo20
%0 = tail call fastcc double @foo20(double %x) nounwind
ret double %0
}
declare fastcc double @foo20(double) nounwind
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