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llvm-mirror/test/Transforms/ObjCARC/weak-copies.ll
David Blaikie 3ea2df7c7b [opaque pointer type] Add textual IR support for explicit type parameter to gep operator
Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.

(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)

import fileinput
import sys
import re

rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)

def conv(match):
  line = match.group(1)
  line += match.group(4)
  line += ", "
  line += match.group(2)
  return line

line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
  sys.stdout.write(line[off:match.start()])
  sys.stdout.write(conv(match))
  off = match.end()
sys.stdout.write(line[off:])

llvm-svn: 232184
2015-03-13 18:20:45 +00:00

90 lines
4.2 KiB
LLVM

; RUN: opt -S -basicaa -objc-arc < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin11.0.0"
%0 = type { i64, i64, i8*, i8*, i8*, i8* }
%1 = type <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>
%struct.__block_descriptor = type { i64, i64 }
@_NSConcreteStackBlock = external global i8*
@.str = private unnamed_addr constant [6 x i8] c"v8@?0\00"
@"\01L_OBJC_CLASS_NAME_" = internal global [3 x i8] c"\01@\00", section "__TEXT,__objc_classname,cstring_literals", align 1
@__block_descriptor_tmp = internal constant %0 { i64 0, i64 40, i8* bitcast (void (i8*, i8*)* @__copy_helper_block_ to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block_ to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @"\01L_OBJC_CLASS_NAME_", i32 0, i32 0) }
@"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip"
@llvm.used = appending global [2 x i8*] [i8* getelementptr inbounds ([3 x i8], [3 x i8]* @"\01L_OBJC_CLASS_NAME_", i32 0, i32 0), i8* bitcast ([2 x i32]* @"\01L_OBJC_IMAGE_INFO" to i8*)], section "llvm.metadata"
; Eliminate unnecessary weak pointer copies.
; CHECK: define void @foo() {
; CHECK-NEXT: entry:
; CHECK-NEXT: %call = call i8* @bar()
; CHECK-NEXT: call void @use(i8* %call) [[NUW:#[0-9]+]]
; CHECK-NEXT: ret void
; CHECK-NEXT: }
define void @foo() {
entry:
%w = alloca i8*, align 8
%x = alloca i8*, align 8
%call = call i8* @bar()
%0 = call i8* @objc_initWeak(i8** %w, i8* %call) nounwind
%1 = call i8* @objc_loadWeak(i8** %w) nounwind
%2 = call i8* @objc_initWeak(i8** %x, i8* %1) nounwind
%3 = call i8* @objc_loadWeak(i8** %x) nounwind
call void @use(i8* %3) nounwind
call void @objc_destroyWeak(i8** %x) nounwind
call void @objc_destroyWeak(i8** %w) nounwind
ret void
}
; Eliminate unnecessary weak pointer copies in a block initialization.
; CHECK: define void @qux(i8* %me) #0 {
; CHECK-NEXT: entry:
; CHECK-NEXT: %block = alloca %1, align 8
; CHECK-NOT: alloca
; CHECK: }
define void @qux(i8* %me) nounwind {
entry:
%w = alloca i8*, align 8
%block = alloca %1, align 8
%0 = call i8* @objc_retain(i8* %me) nounwind
%1 = call i8* @objc_initWeak(i8** %w, i8* %0) nounwind
%block.isa = getelementptr inbounds %1, %1* %block, i64 0, i32 0
store i8* bitcast (i8** @_NSConcreteStackBlock to i8*), i8** %block.isa, align 8
%block.flags = getelementptr inbounds %1, %1* %block, i64 0, i32 1
store i32 1107296256, i32* %block.flags, align 8
%block.reserved = getelementptr inbounds %1, %1* %block, i64 0, i32 2
store i32 0, i32* %block.reserved, align 4
%block.invoke = getelementptr inbounds %1, %1* %block, i64 0, i32 3
store i8* bitcast (void (i8*)* @__qux_block_invoke_0 to i8*), i8** %block.invoke, align 8
%block.descriptor = getelementptr inbounds %1, %1* %block, i64 0, i32 4
store %struct.__block_descriptor* bitcast (%0* @__block_descriptor_tmp to %struct.__block_descriptor*), %struct.__block_descriptor** %block.descriptor, align 8
%block.captured = getelementptr inbounds %1, %1* %block, i64 0, i32 5
%2 = call i8* @objc_loadWeak(i8** %w) nounwind
%3 = call i8* @objc_initWeak(i8** %block.captured, i8* %2) nounwind
%4 = bitcast %1* %block to void ()*
call void @use_block(void ()* %4) nounwind
call void @objc_destroyWeak(i8** %block.captured) nounwind
call void @objc_destroyWeak(i8** %w) nounwind
call void @objc_release(i8* %0) nounwind, !clang.imprecise_release !0
ret void
}
declare i8* @objc_retain(i8*)
declare void @use_block(void ()*) nounwind
declare void @__qux_block_invoke_0(i8* %.block_descriptor) nounwind
declare void @__copy_helper_block_(i8*, i8*) nounwind
declare void @objc_copyWeak(i8**, i8**)
declare void @__destroy_helper_block_(i8*) nounwind
declare void @objc_release(i8*)
declare i8* @bar()
declare i8* @objc_initWeak(i8**, i8*)
declare i8* @objc_loadWeak(i8**)
declare void @use(i8*) nounwind
declare void @objc_destroyWeak(i8**)
; CHECK: attributes [[NUW]] = { nounwind }
!0 = !{}