llvm/test/CodeGen/X86/2010-09-16-asmcrash.ll
David Blaikie 198d8baafb [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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230786 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 19:29:02 +00:00

57 lines
2.1 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-unknown-freebsd8.1 -o /dev/null
; This formerly crashed, PR 8154.
module asm ".weak sem_close"
module asm ".equ sem_close, _sem_close"
module asm ".weak sem_destroy"
module asm ".equ sem_destroy, _sem_destroy"
module asm ".weak sem_getvalue"
module asm ".equ sem_getvalue, _sem_getvalue"
module asm ".weak sem_init"
module asm ".equ sem_init, _sem_init"
module asm ".weak sem_open"
module asm ".equ sem_open, _sem_open"
module asm ".weak sem_post"
module asm ".equ sem_post, _sem_post"
module asm ".weak sem_timedwait"
module asm ".equ sem_timedwait, _sem_timedwait"
module asm ".weak sem_trywait"
module asm ".equ sem_trywait, _sem_trywait"
module asm ".weak sem_unlink"
module asm ".equ sem_unlink, _sem_unlink"
module asm ".weak sem_wait"
module asm ".equ sem_wait, _sem_wait"
%struct._sem = type { i32, %struct._usem }
%struct._usem = type { i32, i32, i32 }
define void @_sem_timedwait(%struct._sem* noalias %sem) nounwind ssp {
entry:
br i1 undef, label %while.cond.preheader, label %sem_check_validity.exit
while.cond.preheader: ; preds = %entry
%tmp4 = getelementptr inbounds %struct._sem, %struct._sem* %sem, i64 0, i32 1, i32 1
br label %while.cond
sem_check_validity.exit: ; preds = %entry
ret void
while.cond: ; preds = %while.body, %while.cond.preheader
br i1 undef, label %while.body, label %while.end
while.body: ; preds = %while.cond
%0 = call i8 asm sideeffect "\09lock ; \09\09\09cmpxchgl $2,$1 ;\09 sete\09$0 ;\09\091:\09\09\09\09# atomic_cmpset_int", "={ax},=*m,r,{ax},*m,~{memory},~{dirflag},~{fpsr},~{flags}"(i32* %tmp4, i32 undef, i32 undef, i32* %tmp4) nounwind, !srcloc !0
br i1 undef, label %while.cond, label %return
while.end: ; preds = %while.cond
br i1 undef, label %if.end18, label %return
if.end18: ; preds = %while.end
unreachable
return: ; preds = %while.end, %while.body
ret void
}
!0 = !{i32 158484}