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https://github.com/c64scene-ar/llvm-6502.git
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7c9c6ed761
Essentially the same as the GEP change in r230786.
A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)
import fileinput
import sys
import re
pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")
for line in sys.stdin:
sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
223 lines
7.5 KiB
LLVM
223 lines
7.5 KiB
LLVM
; RUN: opt -objc-arc-contract -S < %s | FileCheck %s
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target datalayout = "e-p:64:64:64"
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declare i8* @objc_retain(i8*)
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declare void @objc_release(i8*)
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declare void @use_pointer(i8*)
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@x = external global i8*
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; CHECK-LABEL: define void @test0(
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; CHECK: entry:
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; CHECK-NEXT: tail call void @objc_storeStrong(i8** @x, i8* %p) [[NUW:#[0-9]+]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test0(i8* %p) {
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entry:
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%0 = tail call i8* @objc_retain(i8* %p) nounwind
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%tmp = load i8*, i8** @x, align 8
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store i8* %0, i8** @x, align 8
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tail call void @objc_release(i8* %tmp) nounwind
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ret void
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}
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; Don't do this if the load is volatile.
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; CHECK-LABEL: define void @test1(i8* %p) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %p) [[NUW]]
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; CHECK-NEXT: %tmp = load volatile i8*, i8** @x, align 8
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; CHECK-NEXT: store i8* %0, i8** @x, align 8
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; CHECK-NEXT: tail call void @objc_release(i8* %tmp) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test1(i8* %p) {
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entry:
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%0 = tail call i8* @objc_retain(i8* %p) nounwind
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%tmp = load volatile i8*, i8** @x, align 8
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store i8* %0, i8** @x, align 8
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tail call void @objc_release(i8* %tmp) nounwind
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ret void
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}
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; Don't do this if the store is volatile.
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; CHECK-LABEL: define void @test2(i8* %p) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %p) [[NUW]]
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; CHECK-NEXT: %tmp = load i8*, i8** @x, align 8
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; CHECK-NEXT: store volatile i8* %0, i8** @x, align 8
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; CHECK-NEXT: tail call void @objc_release(i8* %tmp) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test2(i8* %p) {
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entry:
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%0 = tail call i8* @objc_retain(i8* %p) nounwind
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%tmp = load i8*, i8** @x, align 8
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store volatile i8* %0, i8** @x, align 8
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tail call void @objc_release(i8* %tmp) nounwind
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ret void
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}
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; Don't do this if there's a use of the old pointer value between the store
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; and the release.
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; CHECK-LABEL: define void @test3(i8* %newValue) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %x0 = tail call i8* @objc_retain(i8* %newValue) [[NUW]]
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; CHECK-NEXT: %x1 = load i8*, i8** @x, align 8
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; CHECK-NEXT: store i8* %x0, i8** @x, align 8
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; CHECK-NEXT: tail call void @use_pointer(i8* %x1), !clang.arc.no_objc_arc_exceptions !0
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; CHECK-NEXT: tail call void @objc_release(i8* %x1) [[NUW]], !clang.imprecise_release !0
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test3(i8* %newValue) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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%x1 = load i8*, i8** @x, align 8
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store i8* %newValue, i8** @x, align 8
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tail call void @use_pointer(i8* %x1), !clang.arc.no_objc_arc_exceptions !0
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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ret void
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}
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; Like test3, but with an icmp use instead of a call, for good measure.
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; CHECK-LABEL: define i1 @test4(i8* %newValue, i8* %foo) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %x0 = tail call i8* @objc_retain(i8* %newValue) [[NUW]]
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; CHECK-NEXT: %x1 = load i8*, i8** @x, align 8
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; CHECK-NEXT: store i8* %x0, i8** @x, align 8
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; CHECK-NEXT: %t = icmp eq i8* %x1, %foo
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; CHECK-NEXT: tail call void @objc_release(i8* %x1) [[NUW]], !clang.imprecise_release !0
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; CHECK-NEXT: ret i1 %t
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; CHECK-NEXT: }
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define i1 @test4(i8* %newValue, i8* %foo) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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%x1 = load i8*, i8** @x, align 8
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store i8* %newValue, i8** @x, align 8
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%t = icmp eq i8* %x1, %foo
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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ret i1 %t
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}
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; Do form an objc_storeStrong here, because the use is before the store.
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; CHECK-LABEL: define i1 @test5(i8* %newValue, i8* %foo) {
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; CHECK: %t = icmp eq i8* %x1, %foo
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; CHECK: tail call void @objc_storeStrong(i8** @x, i8* %newValue) [[NUW]]
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; CHECK: }
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define i1 @test5(i8* %newValue, i8* %foo) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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%x1 = load i8*, i8** @x, align 8
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%t = icmp eq i8* %x1, %foo
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store i8* %newValue, i8** @x, align 8
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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ret i1 %t
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}
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; Like test5, but the release is before the store.
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; CHECK-LABEL: define i1 @test6(i8* %newValue, i8* %foo) {
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; CHECK: %t = icmp eq i8* %x1, %foo
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; CHECK: tail call void @objc_storeStrong(i8** @x, i8* %newValue) [[NUW]]
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; CHECK: }
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define i1 @test6(i8* %newValue, i8* %foo) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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%x1 = load i8*, i8** @x, align 8
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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%t = icmp eq i8* %x1, %foo
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store i8* %newValue, i8** @x, align 8
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ret i1 %t
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}
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; Like test0, but there's no store, so don't form an objc_storeStrong.
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; CHECK-LABEL: define void @test7(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %0 = tail call i8* @objc_retain(i8* %p) [[NUW]]
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; CHECK-NEXT: %tmp = load i8*, i8** @x, align 8
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; CHECK-NEXT: tail call void @objc_release(i8* %tmp) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test7(i8* %p) {
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entry:
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%0 = tail call i8* @objc_retain(i8* %p) nounwind
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%tmp = load i8*, i8** @x, align 8
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tail call void @objc_release(i8* %tmp) nounwind
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ret void
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}
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; Like test0, but there's no retain, so don't form an objc_storeStrong.
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; CHECK-LABEL: define void @test8(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %tmp = load i8*, i8** @x, align 8
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; CHECK-NEXT: store i8* %p, i8** @x, align 8
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; CHECK-NEXT: tail call void @objc_release(i8* %tmp) [[NUW]]
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; CHECK-NEXT: ret void
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; CHECK-NEXT: }
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define void @test8(i8* %p) {
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entry:
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%tmp = load i8*, i8** @x, align 8
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store i8* %p, i8** @x, align 8
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tail call void @objc_release(i8* %tmp) nounwind
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ret void
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}
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; Make sure that we properly handle release that *may* release our new
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; value in between the retain and the store. We need to be sure that
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; this we can safely move the retain to the store. This specific test
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; makes sure that we properly handled a release of an unrelated
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; pointer.
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;
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; CHECK-LABEL: define i1 @test9(i8* %newValue, i8* %foo, i8* %unrelated_ptr) {
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; CHECK-NOT: objc_storeStrong
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define i1 @test9(i8* %newValue, i8* %foo, i8* %unrelated_ptr) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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tail call void @objc_release(i8* %unrelated_ptr) nounwind, !clang.imprecise_release !0
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%x1 = load i8*, i8** @x, align 8
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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%t = icmp eq i8* %x1, %foo
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store i8* %newValue, i8** @x, align 8
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ret i1 %t
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}
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; Make sure that we don't perform the optimization when we just have a call.
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;
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; CHECK-LABEL: define i1 @test10(i8* %newValue, i8* %foo, i8* %unrelated_ptr) {
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; CHECK-NOT: objc_storeStrong
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define i1 @test10(i8* %newValue, i8* %foo, i8* %unrelated_ptr) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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call void @use_pointer(i8* %unrelated_ptr)
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%x1 = load i8*, i8** @x, align 8
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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%t = icmp eq i8* %x1, %foo
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store i8* %newValue, i8** @x, align 8
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ret i1 %t
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}
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; Make sure we form the store strong if the use in between the retain
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; and the store does not touch reference counts.
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; CHECK-LABEL: define i1 @test11(i8* %newValue, i8* %foo, i8* %unrelated_ptr) {
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; CHECK: objc_storeStrong
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define i1 @test11(i8* %newValue, i8* %foo, i8* %unrelated_ptr) {
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entry:
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%x0 = tail call i8* @objc_retain(i8* %newValue) nounwind
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%t = icmp eq i8* %newValue, %foo
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%x1 = load i8*, i8** @x, align 8
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tail call void @objc_release(i8* %x1) nounwind, !clang.imprecise_release !0
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store i8* %newValue, i8** @x, align 8
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ret i1 %t
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}
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!0 = !{}
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; CHECK: attributes [[NUW]] = { nounwind }
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