mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
Calls and invokes with the new clang.arc.no_objc_arc_exceptions
metadata may still unwind, but only in ways that the ARC optimizer doesn't need to consider. This permits more aggressive optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150829 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
122
test/Transforms/ObjCARC/no-objc-arc-exceptions.ll
Normal file
122
test/Transforms/ObjCARC/no-objc-arc-exceptions.ll
Normal file
@@ -0,0 +1,122 @@
|
||||
; RUN: opt -S -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-S128"
|
||||
%struct.__block_byref_x = type { i8*, %struct.__block_byref_x*, i32, i32, i32 }
|
||||
%struct.__block_descriptor = type { i64, i64 }
|
||||
@_NSConcreteStackBlock = external global i8*
|
||||
@__block_descriptor_tmp = external hidden constant { i64, i64, i8*, i8*, i8*, i8* }
|
||||
|
||||
; The optimizer should make use of the !clang.arc.no_objc_arc_exceptions
|
||||
; metadata and eliminate the retainBlock+release pair here.
|
||||
; rdar://10803830.
|
||||
|
||||
; CHECK: define void @test0(
|
||||
; CHECK-NOT: @objc
|
||||
; CHECK: }
|
||||
define void @test0() {
|
||||
entry:
|
||||
%x = alloca %struct.__block_byref_x, align 8
|
||||
%block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, align 8
|
||||
%byref.isa = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 0
|
||||
store i8* null, i8** %byref.isa, align 8
|
||||
%byref.forwarding = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 1
|
||||
store %struct.__block_byref_x* %x, %struct.__block_byref_x** %byref.forwarding, align 8
|
||||
%byref.flags = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 2
|
||||
store i32 0, i32* %byref.flags, align 8
|
||||
%byref.size = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 3
|
||||
store i32 32, i32* %byref.size, align 4
|
||||
%block.isa = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 0
|
||||
store i8* bitcast (i8** @_NSConcreteStackBlock to i8*), i8** %block.isa, align 8
|
||||
%block.flags = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 1
|
||||
store i32 1107296256, i32* %block.flags, align 8
|
||||
%block.reserved = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 2
|
||||
store i32 0, i32* %block.reserved, align 4
|
||||
%block.invoke = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 3
|
||||
store i8* bitcast (void (i8*)* @__foo_block_invoke_0 to i8*), i8** %block.invoke, align 8
|
||||
%block.descriptor = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 4
|
||||
store %struct.__block_descriptor* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @__block_descriptor_tmp to %struct.__block_descriptor*), %struct.__block_descriptor** %block.descriptor, align 8
|
||||
%block.captured = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 5
|
||||
%t1 = bitcast %struct.__block_byref_x* %x to i8*
|
||||
store i8* %t1, i8** %block.captured, align 8
|
||||
%t2 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block to i8*
|
||||
%t3 = call i8* @objc_retainBlock(i8* %t2) nounwind, !clang.arc.copy_on_escape !4
|
||||
%t4 = getelementptr inbounds i8* %t3, i64 16
|
||||
%t5 = bitcast i8* %t4 to i8**
|
||||
%t6 = load i8** %t5, align 8
|
||||
%t7 = bitcast i8* %t6 to void (i8*)*
|
||||
invoke void %t7(i8* %t3)
|
||||
to label %invoke.cont unwind label %lpad, !clang.arc.no_objc_arc_exceptions !4
|
||||
|
||||
invoke.cont: ; preds = %entry
|
||||
call void @objc_release(i8* %t3) nounwind, !clang.imprecise_release !4
|
||||
call void @_Block_object_dispose(i8* %t1, i32 8)
|
||||
ret void
|
||||
|
||||
lpad: ; preds = %entry
|
||||
%t8 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
|
||||
cleanup
|
||||
call void @_Block_object_dispose(i8* %t1, i32 8)
|
||||
resume { i8*, i32 } %t8
|
||||
}
|
||||
|
||||
; There is no !clang.arc.no_objc_arc_exceptions
|
||||
; metadata here, so the optimizer shouldn't eliminate anything.
|
||||
|
||||
; CHECK: define void @test0_no_metadata(
|
||||
; CHECK: call i8* @objc_retainBlock(
|
||||
; CHECK: invoke
|
||||
; CHECK: call void @objc_release(
|
||||
; CHECK: }
|
||||
define void @test0_no_metadata() {
|
||||
entry:
|
||||
%x = alloca %struct.__block_byref_x, align 8
|
||||
%block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, align 8
|
||||
%byref.isa = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 0
|
||||
store i8* null, i8** %byref.isa, align 8
|
||||
%byref.forwarding = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 1
|
||||
store %struct.__block_byref_x* %x, %struct.__block_byref_x** %byref.forwarding, align 8
|
||||
%byref.flags = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 2
|
||||
store i32 0, i32* %byref.flags, align 8
|
||||
%byref.size = getelementptr inbounds %struct.__block_byref_x* %x, i64 0, i32 3
|
||||
store i32 32, i32* %byref.size, align 4
|
||||
%block.isa = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 0
|
||||
store i8* bitcast (i8** @_NSConcreteStackBlock to i8*), i8** %block.isa, align 8
|
||||
%block.flags = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 1
|
||||
store i32 1107296256, i32* %block.flags, align 8
|
||||
%block.reserved = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 2
|
||||
store i32 0, i32* %block.reserved, align 4
|
||||
%block.invoke = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 3
|
||||
store i8* bitcast (void (i8*)* @__foo_block_invoke_0 to i8*), i8** %block.invoke, align 8
|
||||
%block.descriptor = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 4
|
||||
store %struct.__block_descriptor* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @__block_descriptor_tmp to %struct.__block_descriptor*), %struct.__block_descriptor** %block.descriptor, align 8
|
||||
%block.captured = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 5
|
||||
%t1 = bitcast %struct.__block_byref_x* %x to i8*
|
||||
store i8* %t1, i8** %block.captured, align 8
|
||||
%t2 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block to i8*
|
||||
%t3 = call i8* @objc_retainBlock(i8* %t2) nounwind, !clang.arc.copy_on_escape !4
|
||||
%t4 = getelementptr inbounds i8* %t3, i64 16
|
||||
%t5 = bitcast i8* %t4 to i8**
|
||||
%t6 = load i8** %t5, align 8
|
||||
%t7 = bitcast i8* %t6 to void (i8*)*
|
||||
invoke void %t7(i8* %t3)
|
||||
to label %invoke.cont unwind label %lpad
|
||||
|
||||
invoke.cont: ; preds = %entry
|
||||
call void @objc_release(i8* %t3) nounwind, !clang.imprecise_release !4
|
||||
call void @_Block_object_dispose(i8* %t1, i32 8)
|
||||
ret void
|
||||
|
||||
lpad: ; preds = %entry
|
||||
%t8 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__objc_personality_v0 to i8*)
|
||||
cleanup
|
||||
call void @_Block_object_dispose(i8* %t1, i32 8)
|
||||
resume { i8*, i32 } %t8
|
||||
}
|
||||
|
||||
declare i8* @objc_retainBlock(i8*)
|
||||
declare void @objc_release(i8*)
|
||||
declare void @_Block_object_dispose(i8*, i32)
|
||||
declare i32 @__objc_personality_v0(...)
|
||||
declare void @__foo_block_invoke_0(i8* nocapture) uwtable ssp
|
||||
|
||||
!4 = metadata !{}
|
||||
Reference in New Issue
Block a user