<div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr">On Thu, Mar 2, 2017 at 5:20 PM Adrian Prantl via llvm-commits <<a href="mailto:llvm-commits@lists.llvm.org">llvm-commits@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: adrian<br class="gmail_msg">
Date: Thu Mar 2 19:08:25 2017<br class="gmail_msg">
New Revision: 296847<br class="gmail_msg">
<br class="gmail_msg">
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=296847&view=rev" rel="noreferrer" class="gmail_msg" target="_blank">http://llvm.org/viewvc/llvm-project?rev=296847&view=rev</a><br class="gmail_msg">
Log:<br class="gmail_msg">
LiveDebugValues: Assume calls never clobber SP.<br class="gmail_msg">
<br class="gmail_msg">
A call should never modify the stack pointer, but some backends are<br class="gmail_msg">
not so sure about this and never list SP in the regmask.</blockquote><div><br></div><div>Should the backends be fixed instead?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> For the<br class="gmail_msg">
purposes of LiveDebugValues we assume a call never clobbers SP. We<br class="gmail_msg">
already have a similar workaround in DbgValueHistoryCalculator (which<br class="gmail_msg">
we hopefully can retire soon).<br class="gmail_msg">
<br class="gmail_msg">
This fixes the availabilty of local ASANified variables on AArch64.<br class="gmail_msg">
<br class="gmail_msg">
rdar://problem/27757381<br class="gmail_msg">
<br class="gmail_msg">
Added:<br class="gmail_msg">
llvm/trunk/test/DebugInfo/AArch64/asan-stack-vars.ll<br class="gmail_msg">
Modified:<br class="gmail_msg">
llvm/trunk/lib/CodeGen/LiveDebugValues.cpp<br class="gmail_msg">
<br class="gmail_msg">
Modified: llvm/trunk/lib/CodeGen/LiveDebugValues.cpp<br class="gmail_msg">
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveDebugValues.cpp?rev=296847&r1=296846&r2=296847&view=diff" rel="noreferrer" class="gmail_msg" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LiveDebugValues.cpp?rev=296847&r1=296846&r2=296847&view=diff</a><br class="gmail_msg">
==============================================================================<br class="gmail_msg">
--- llvm/trunk/lib/CodeGen/LiveDebugValues.cpp (original)<br class="gmail_msg">
+++ llvm/trunk/lib/CodeGen/LiveDebugValues.cpp Thu Mar 2 19:08:25 2017<br class="gmail_msg">
@@ -373,8 +373,12 @@ void LiveDebugValues::transferRegisterDe<br class="gmail_msg">
unsigned SP = TLI->getStackPointerRegisterToSaveRestore();<br class="gmail_msg">
SparseBitVector<> KillSet;<br class="gmail_msg">
for (const MachineOperand &MO : MI.operands()) {<br class="gmail_msg">
+ // Determine whether the operand is a register def. Assume that call<br class="gmail_msg">
+ // instructions never clobber SP, because some backends (e.g., AArch64)<br class="gmail_msg">
+ // never list SP in the regmask.<br class="gmail_msg">
if (MO.isReg() && MO.isDef() && MO.getReg() &&<br class="gmail_msg">
- TRI->isPhysicalRegister(MO.getReg())) {<br class="gmail_msg">
+ TRI->isPhysicalRegister(MO.getReg()) &&<br class="gmail_msg">
+ !(MI.isCall() && MO.getReg() == SP)) {<br class="gmail_msg">
// Remove ranges of all aliased registers.<br class="gmail_msg">
for (MCRegAliasIterator RAI(MO.getReg(), TRI, true); RAI.isValid(); ++RAI)<br class="gmail_msg">
for (unsigned ID : OpenRanges.getVarLocs())<br class="gmail_msg">
<br class="gmail_msg">
Added: llvm/trunk/test/DebugInfo/AArch64/asan-stack-vars.ll<br class="gmail_msg">
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/AArch64/asan-stack-vars.ll?rev=296847&view=auto" rel="noreferrer" class="gmail_msg" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/AArch64/asan-stack-vars.ll?rev=296847&view=auto</a><br class="gmail_msg">
==============================================================================<br class="gmail_msg">
--- llvm/trunk/test/DebugInfo/AArch64/asan-stack-vars.ll (added)<br class="gmail_msg">
+++ llvm/trunk/test/DebugInfo/AArch64/asan-stack-vars.ll Thu Mar 2 19:08:25 2017<br class="gmail_msg">
@@ -0,0 +1,326 @@<br class="gmail_msg">
+; RUN: llc -O0 -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s<br class="gmail_msg">
+;<br class="gmail_msg">
+; Derived from (clang -O0 -g -fsanitize=address -fobjc-arc)<br class="gmail_msg">
+; @protocol NSObject<br class="gmail_msg">
+; @end<br class="gmail_msg">
+; @interface NSObject<NSObject>{}<br class="gmail_msg">
+; + (instancetype)alloc;<br class="gmail_msg">
+; @end<br class="gmail_msg">
+; struct CGSize {<br class="gmail_msg">
+; double width;<br class="gmail_msg">
+; double height;<br class="gmail_msg">
+; };<br class="gmail_msg">
+; typedef struct CGSize CGSize;<br class="gmail_msg">
+; @interface Object : NSObject<br class="gmail_msg">
+; - (instancetype)initWithSize:(CGSize)size;<br class="gmail_msg">
+; - (id)aMessage;<br class="gmail_msg">
+; @end<br class="gmail_msg">
+; @implementation MyObject<br class="gmail_msg">
+; + (id)doWithSize:(CGSize)imageSize andObject:(id)object {<br class="gmail_msg">
+; return [object aMessage];<br class="gmail_msg">
+; }<br class="gmail_msg">
+; @end<br class="gmail_msg">
+;<br class="gmail_msg">
+; CHECK: .debug_info contents:<br class="gmail_msg">
+; CHECK: DW_TAG_subprogram<br class="gmail_msg">
+; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)<br class="gmail_msg">
+; CHECK-NEXT: DW_AT_high_pc [DW_FORM_addr] ([[FN_END:.*]])<br class="gmail_msg">
+; CHECK: "_cmd"<br class="gmail_msg">
+; CHECK: DW_TAG_formal_parameter<br class="gmail_msg">
+; CHECK-NEXT: DW_AT_location {{.*}} ([[OFS:.*]])<br class="gmail_msg">
+; CHECK-NEXT: DW_AT_name {{.*}}"imageSize"<br class="gmail_msg">
+;<br class="gmail_msg">
+; CHECK: .debug_loc contents:<br class="gmail_msg">
+; CHECK: [[OFS]]: Beginning address offset: 0x0000000000000000<br class="gmail_msg">
+; CHECK_NOT: 0x{{.*}}: Beginning<br class="gmail_msg">
+; CHECK: Ending address offset: [[FN_END]]<br class="gmail_msg">
+<br class="gmail_msg">
+; ModuleID = 'm.m'<br class="gmail_msg">
+source_filename = "m.m"<br class="gmail_msg">
+target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"<br class="gmail_msg">
+target triple = "arm64-apple-ios"<br class="gmail_msg">
+<br class="gmail_msg">
+%0 = type opaque<br class="gmail_msg">
+%struct._class_t = type { %struct._class_t*, %struct._class_t*, %struct._objc_cache*, i8* (i8*, i8*)**, %struct._class_ro_t* }<br class="gmail_msg">
+%struct._objc_cache = type opaque<br class="gmail_msg">
+%struct._class_ro_t = type { i32, i32, i32, i8*, i8*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._ivar_list_t*, i8*, %struct._prop_list_t* }<br class="gmail_msg">
+%struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }<br class="gmail_msg">
+%struct._objc_method = type { i8*, i8*, i8* }<br class="gmail_msg">
+%struct._objc_protocol_list = type { i64, [0 x %struct._protocol_t*] }<br class="gmail_msg">
+%struct._protocol_t = type { i8*, i8*, %struct._objc_protocol_list*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._prop_list_t*, i32, i32, i8**, i8*, %struct._prop_list_t* }<br class="gmail_msg">
+%struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }<br class="gmail_msg">
+%struct._ivar_t = type { i32*, i8*, i8*, i32, i32 }<br class="gmail_msg">
+%struct._prop_list_t = type { i32, i32, [0 x %struct._prop_t] }<br class="gmail_msg">
+%struct._prop_t = type { i8*, i8* }<br class="gmail_msg">
+%struct.CGSize = type { double, double }<br class="gmail_msg">
+<br class="gmail_msg">
+@"OBJC_CLASS_$_Object" = external global %struct._class_t<br class="gmail_msg">
+@"OBJC_CLASSLIST_REFERENCES_$_" = private global %struct._class_t* @"OBJC_CLASS_$_Object", section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8<br class="gmail_msg">
+@OBJC_METH_VAR_NAME_ = private unnamed_addr constant [6 x i8] c"alloc\00", section "__TEXT,__objc_methname,cstring_literals", align 1<br class="gmail_msg">
+@OBJC_SELECTOR_REFERENCES_ = private externally_initialized global i8* getelementptr inbounds ([6 x i8], [6 x i8]* @OBJC_METH_VAR_NAME_, i32 0, i32 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip", align 8<br class="gmail_msg">
+@OBJC_METH_VAR_NAME_.1 = private unnamed_addr constant [14 x i8] c"initWithSize:\00", section "__TEXT,__objc_methname,cstring_literals", align 1<br class="gmail_msg">
+@OBJC_SELECTOR_REFERENCES_.2 = private externally_initialized global i8* getelementptr inbounds ([14 x i8], [14 x i8]* @OBJC_METH_VAR_NAME_.1, i32 0, i32 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip", align 8<br class="gmail_msg">
+@OBJC_METH_VAR_NAME_.3 = private unnamed_addr constant [9 x i8] c"aMessage\00", section "__TEXT,__objc_methname,cstring_literals", align 1<br class="gmail_msg">
+@OBJC_SELECTOR_REFERENCES_.4 = private externally_initialized global i8* getelementptr inbounds ([9 x i8], [9 x i8]* @OBJC_METH_VAR_NAME_.3, i32 0, i32 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip", align 8<br class="gmail_msg">
+@_objc_empty_cache = external global %struct._objc_cache<br class="gmail_msg">
+@"OBJC_CLASS_$_MyObject" = global %struct._class_t { %struct._class_t* @"OBJC_METACLASS_$_MyObject", %struct._class_t* null, %struct._objc_cache* @_objc_empty_cache, i8* (i8*, i8*)** null, %struct._class_ro_t* @"\01l_OBJC_CLASS_RO_$_MyObject" }, section "__DATA, __objc_data", align 8<br class="gmail_msg">
+@"OBJC_METACLASS_$_MyObject" = global %struct._class_t { %struct._class_t* @"OBJC_METACLASS_$_MyObject", %struct._class_t* @"OBJC_CLASS_$_MyObject", %struct._objc_cache* @_objc_empty_cache, i8* (i8*, i8*)** null, %struct._class_ro_t* @"\01l_OBJC_METACLASS_RO_$_MyObject" }, section "__DATA, __objc_data", align 8<br class="gmail_msg">
+@OBJC_CLASS_NAME_ = private unnamed_addr constant [9 x i8] c"MyObject\00", section "__TEXT,__objc_classname,cstring_literals", align 1<br class="gmail_msg">
+@OBJC_METH_VAR_NAME_.5 = private unnamed_addr constant [12 x i8] c"doWithSize:\00", section "__TEXT,__objc_methname,cstring_literals", align 1<br class="gmail_msg">
+@OBJC_METH_VAR_TYPE_ = private unnamed_addr constant [21 x i8] c"@32@0:8{CGSize=dd}16\00", section "__TEXT,__objc_methtype,cstring_literals", align 1<br class="gmail_msg">
+@"\01l_OBJC_$_CLASS_METHODS_MyObject" = private global { i32, i32, [1 x %struct._objc_method] } { i32 24, i32 1, [1 x %struct._objc_method] [%struct._objc_method { i8* getelementptr inbounds ([12 x i8], [12 x i8]* @OBJC_METH_VAR_NAME_.5, i32 0, i32 0), i8* getelementptr inbounds ([21 x i8], [21 x i8]* @OBJC_METH_VAR_TYPE_, i32 0, i32 0), i8* bitcast (i8* (i8*, i8*, [2 x double])* @"\01+[MyObject doWithSize:]" to i8*) }] }, section "__DATA, __objc_const", align 8<br class="gmail_msg">
+@"\01l_OBJC_METACLASS_RO_$_MyObject" = private global %struct._class_ro_t { i32 131, i32 40, i32 40, i8* null, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @OBJC_CLASS_NAME_, i32 0, i32 0), %struct.__method_list_t* bitcast ({ i32, i32, [1 x %struct._objc_method] }* @"\01l_OBJC_$_CLASS_METHODS_MyObject" to %struct.__method_list_t*), %struct._objc_protocol_list* null, %struct._ivar_list_t* null, i8* null, %struct._prop_list_t* null }, section "__DATA, __objc_const", align 8<br class="gmail_msg">
+@"\01l_OBJC_CLASS_RO_$_MyObject" = private global %struct._class_ro_t { i32 130, i32 0, i32 0, i8* null, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @OBJC_CLASS_NAME_, i32 0, i32 0), %struct.__method_list_t* null, %struct._objc_protocol_list* null, %struct._ivar_list_t* null, i8* null, %struct._prop_list_t* null }, section "__DATA, __objc_const", align 8<br class="gmail_msg">
+@"OBJC_LABEL_CLASS_$" = private global [1 x i8*] [i8* bitcast (%struct._class_t* @"OBJC_CLASS_$_MyObject" to i8*)], section "__DATA, __objc_classlist, regular, no_dead_strip", align 8<br class="gmail_msg">
+@llvm.compiler.used = appending global [12 x i8*] [i8* bitcast (%struct._class_t** @"OBJC_CLASSLIST_REFERENCES_$_" to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @OBJC_METH_VAR_NAME_, i32 0, i32 0), i8* bitcast (i8** @OBJC_SELECTOR_REFERENCES_ to i8*), i8* getelementptr inbounds ([14 x i8], [14 x i8]* @OBJC_METH_VAR_NAME_.1, i32 0, i32 0), i8* bitcast (i8** @OBJC_SELECTOR_REFERENCES_.2 to i8*), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @OBJC_METH_VAR_NAME_.3, i32 0, i32 0), i8* bitcast (i8** @OBJC_SELECTOR_REFERENCES_.4 to i8*), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @OBJC_CLASS_NAME_, i32 0, i32 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @OBJC_METH_VAR_NAME_.5, i32 0, i32 0), i8* getelementptr inbounds ([21 x i8], [21 x i8]* @OBJC_METH_VAR_TYPE_, i32 0, i32 0), i8* bitcast ({ i32, i32, [1 x %struct._objc_method] }* @"\01l_OBJC_$_CLASS_METHODS_MyObject" to i8*), i8* bitcast ([1 x i8*]* @"OBJC_LABEL_CLASS_$" to i8*)], section "llvm.metadata"<br class="gmail_msg">
+@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 1, void ()* @asan.module_ctor, i8* null }]<br class="gmail_msg">
+@__asan_shadow_memory_dynamic_address = external global i64<br class="gmail_msg">
+@__asan_gen_ = private unnamed_addr constant [34 x i8] c"2 32 16 9 imageSize 64 8 6 object\00", align 1<br class="gmail_msg">
+<br class="gmail_msg">
+; Function Attrs: noinline sanitize_address ssp uwtable<br class="gmail_msg">
+define internal i8* @"\01+[MyObject doWithSize:]"(i8* %self, i8* %_cmd, [2 x double] %imageSize.coerce) #0 !dbg !14 {<br class="gmail_msg">
+entry:<br class="gmail_msg">
+ %0 = load i64, i64* @__asan_shadow_memory_dynamic_address<br class="gmail_msg">
+ %self.addr = alloca i8*, align 8<br class="gmail_msg">
+ %_cmd.addr = alloca i8*, align 8<br class="gmail_msg">
+ %MyAlloca = alloca [96 x i8], align 32, !dbg !35<br class="gmail_msg">
+ %1 = ptrtoint [96 x i8]* %MyAlloca to i64, !dbg !35<br class="gmail_msg">
+ %2 = add i64 %1, 32, !dbg !35<br class="gmail_msg">
+ %3 = inttoptr i64 %2 to %struct.CGSize*, !dbg !35<br class="gmail_msg">
+ %4 = add i64 %1, 64, !dbg !35<br class="gmail_msg">
+ %5 = inttoptr i64 %4 to %0**, !dbg !35<br class="gmail_msg">
+ %6 = inttoptr i64 %1 to i64*, !dbg !35<br class="gmail_msg">
+ store i64 1102416563, i64* %6, !dbg !35<br class="gmail_msg">
+ %7 = add i64 %1, 8, !dbg !35<br class="gmail_msg">
+ %8 = inttoptr i64 %7 to i64*, !dbg !35<br class="gmail_msg">
+ store i64 ptrtoint ([34 x i8]* @__asan_gen_ to i64), i64* %8, !dbg !35<br class="gmail_msg">
+ %9 = add i64 %1, 16, !dbg !35<br class="gmail_msg">
+ %10 = inttoptr i64 %9 to i64*, !dbg !35<br class="gmail_msg">
+ store i64 ptrtoint (i8* (i8*, i8*, [2 x double])* @"\01+[MyObject doWithSize:]" to i64), i64* %10, !dbg !35<br class="gmail_msg">
+ %11 = lshr i64 %1, 3, !dbg !35<br class="gmail_msg">
+ %12 = add i64 %11, %0, !dbg !35<br class="gmail_msg">
+ %13 = add i64 %12, 0, !dbg !35<br class="gmail_msg">
+ %14 = inttoptr i64 %13 to i64*, !dbg !35<br class="gmail_msg">
+ store i64 -940689368107847183, i64* %14, align 1, !dbg !35<br class="gmail_msg">
+ %15 = add i64 %12, 9, !dbg !35<br class="gmail_msg">
+ %16 = inttoptr i64 %15 to i16*, !dbg !35<br class="gmail_msg">
+ store i16 -3085, i16* %16, align 1, !dbg !35<br class="gmail_msg">
+ %17 = add i64 %12, 11, !dbg !35<br class="gmail_msg">
+ %18 = inttoptr i64 %17 to i8*, !dbg !35<br class="gmail_msg">
+ store i8 -13, i8* %18, align 1, !dbg !35<br class="gmail_msg">
+ call void @llvm.dbg.declare(metadata %struct.CGSize* %3, metadata !36, metadata !37), !dbg !38<br class="gmail_msg">
+ call void @llvm.dbg.declare(metadata %0** %5, metadata !39, metadata !37), !dbg !45<br class="gmail_msg">
+ %19 = bitcast %struct.CGSize* %3 to [2 x double]*<br class="gmail_msg">
+ %20 = ptrtoint [2 x double]* %19 to i64<br class="gmail_msg">
+ %21 = lshr i64 %20, 3<br class="gmail_msg">
+ %22 = add i64 %21, %0<br class="gmail_msg">
+ %23 = inttoptr i64 %22 to i16*<br class="gmail_msg">
+ %24 = load i16, i16* %23<br class="gmail_msg">
+ %25 = icmp ne i16 %24, 0<br class="gmail_msg">
+ br i1 %25, label %26, label %27<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:26: ; preds = %entry<br class="gmail_msg">
+ call void @__asan_report_store16(i64 %20)<br class="gmail_msg">
+ call void asm sideeffect "", ""()<br class="gmail_msg">
+ unreachable<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:27: ; preds = %entry<br class="gmail_msg">
+ store [2 x double] %imageSize.coerce, [2 x double]* %19, align 8<br class="gmail_msg">
+ store i8* %self, i8** %self.addr, align 8<br class="gmail_msg">
+ call void @llvm.dbg.declare(metadata i8** %self.addr, metadata !46, metadata !48), !dbg !49<br class="gmail_msg">
+ store i8* %_cmd, i8** %_cmd.addr, align 8<br class="gmail_msg">
+ call void @llvm.dbg.declare(metadata i8** %_cmd.addr, metadata !50, metadata !48), !dbg !49<br class="gmail_msg">
+ %28 = load %struct._class_t*, %struct._class_t** @"OBJC_CLASSLIST_REFERENCES_$_", align 8, !dbg !52<br class="gmail_msg">
+ %29 = add i64 lshr (i64 ptrtoint (i8** @OBJC_SELECTOR_REFERENCES_ to i64), i64 3), %0, !dbg !52<br class="gmail_msg">
+ %30 = inttoptr i64 %29 to i8*, !dbg !52<br class="gmail_msg">
+ %31 = load i8, i8* %30, !dbg !52<br class="gmail_msg">
+ %32 = icmp ne i8 %31, 0, !dbg !52<br class="gmail_msg">
+ br i1 %32, label %33, label %34, !dbg !52<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:33: ; preds = %27<br class="gmail_msg">
+ call void @__asan_report_load8(i64 ptrtoint (i8** @OBJC_SELECTOR_REFERENCES_ to i64)), !dbg !52<br class="gmail_msg">
+ call void asm sideeffect "", ""(), !dbg !52<br class="gmail_msg">
+ unreachable, !dbg !52<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:34: ; preds = %27<br class="gmail_msg">
+ %35 = load i8*, i8** @OBJC_SELECTOR_REFERENCES_, align 8, !dbg !52, !invariant.load !2<br class="gmail_msg">
+ %36 = bitcast %struct._class_t* %28 to i8*, !dbg !52<br class="gmail_msg">
+ %call = call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %36, i8* %35), !dbg !52<br class="gmail_msg">
+ %37 = bitcast i8* %call to %0*, !dbg !52<br class="gmail_msg">
+ %38 = add i64 lshr (i64 ptrtoint (i8** @OBJC_SELECTOR_REFERENCES_.2 to i64), i64 3), %0, !dbg !53<br class="gmail_msg">
+ %39 = inttoptr i64 %38 to i8*, !dbg !53<br class="gmail_msg">
+ %40 = load i8, i8* %39, !dbg !53<br class="gmail_msg">
+ %41 = icmp ne i8 %40, 0, !dbg !53<br class="gmail_msg">
+ br i1 %41, label %42, label %43, !dbg !53<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:42: ; preds = %34<br class="gmail_msg">
+ call void @__asan_report_load8(i64 ptrtoint (i8** @OBJC_SELECTOR_REFERENCES_.2 to i64)), !dbg !53<br class="gmail_msg">
+ call void asm sideeffect "", ""(), !dbg !53<br class="gmail_msg">
+ unreachable, !dbg !53<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:43: ; preds = %34<br class="gmail_msg">
+ %44 = load i8*, i8** @OBJC_SELECTOR_REFERENCES_.2, align 8, !dbg !53, !invariant.load !2<br class="gmail_msg">
+ %45 = bitcast %0* %37 to i8*, !dbg !53<br class="gmail_msg">
+ %46 = bitcast %struct.CGSize* %3 to [2 x double]*, !dbg !53<br class="gmail_msg">
+ %47 = ptrtoint [2 x double]* %46 to i64, !dbg !53<br class="gmail_msg">
+ %48 = lshr i64 %47, 3, !dbg !53<br class="gmail_msg">
+ %49 = add i64 %48, %0, !dbg !53<br class="gmail_msg">
+ %50 = inttoptr i64 %49 to i16*, !dbg !53<br class="gmail_msg">
+ %51 = load i16, i16* %50, !dbg !53<br class="gmail_msg">
+ %52 = icmp ne i16 %51, 0, !dbg !53<br class="gmail_msg">
+ br i1 %52, label %53, label %54, !dbg !53<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:53: ; preds = %43<br class="gmail_msg">
+ call void @__asan_report_load16(i64 %47), !dbg !53<br class="gmail_msg">
+ call void asm sideeffect "", ""(), !dbg !53<br class="gmail_msg">
+ unreachable, !dbg !53<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:54: ; preds = %43<br class="gmail_msg">
+ %55 = load [2 x double], [2 x double]* %46, align 8, !dbg !53<br class="gmail_msg">
+ %call1 = call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*, [2 x double])*)(i8* %45, i8* %44, [2 x double] %55), !dbg !53<br class="gmail_msg">
+ %56 = bitcast i8* %call1 to %0*, !dbg !53<br class="gmail_msg">
+ %57 = ptrtoint %0** %5 to i64, !dbg !45<br class="gmail_msg">
+ %58 = lshr i64 %57, 3, !dbg !45<br class="gmail_msg">
+ %59 = add i64 %58, %0, !dbg !45<br class="gmail_msg">
+ %60 = inttoptr i64 %59 to i8*, !dbg !45<br class="gmail_msg">
+ %61 = load i8, i8* %60, !dbg !45<br class="gmail_msg">
+ %62 = icmp ne i8 %61, 0, !dbg !45<br class="gmail_msg">
+ br i1 %62, label %63, label %64, !dbg !45<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:63: ; preds = %54<br class="gmail_msg">
+ call void @__asan_report_store8(i64 %57), !dbg !45<br class="gmail_msg">
+ call void asm sideeffect "", ""(), !dbg !45<br class="gmail_msg">
+ unreachable, !dbg !45<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:64: ; preds = %54<br class="gmail_msg">
+ store %0* %56, %0** %5, align 8, !dbg !45<br class="gmail_msg">
+ %65 = load %0*, %0** %5, align 8, !dbg !54<br class="gmail_msg">
+ %66 = add i64 lshr (i64 ptrtoint (i8** @OBJC_SELECTOR_REFERENCES_.4 to i64), i64 3), %0, !dbg !55<br class="gmail_msg">
+ %67 = inttoptr i64 %66 to i8*, !dbg !55<br class="gmail_msg">
+ %68 = load i8, i8* %67, !dbg !55<br class="gmail_msg">
+ %69 = icmp ne i8 %68, 0, !dbg !55<br class="gmail_msg">
+ br i1 %69, label %70, label %71, !dbg !55<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:70: ; preds = %64<br class="gmail_msg">
+ call void @__asan_report_load8(i64 ptrtoint (i8** @OBJC_SELECTOR_REFERENCES_.4 to i64)), !dbg !55<br class="gmail_msg">
+ call void asm sideeffect "", ""(), !dbg !55<br class="gmail_msg">
+ unreachable, !dbg !55<br class="gmail_msg">
+<br class="gmail_msg">
+; <label>:71: ; preds = %64<br class="gmail_msg">
+ %72 = load i8*, i8** @OBJC_SELECTOR_REFERENCES_.4, align 8, !dbg !55, !invariant.load !2<br class="gmail_msg">
+ %73 = bitcast %0* %65 to i8*, !dbg !55<br class="gmail_msg">
+ %call2 = call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %73, i8* %72), !dbg !55<br class="gmail_msg">
+ call void asm sideeffect "mov\09fp, fp\09\09# marker for objc_retainAutoreleaseReturnValue", ""(), !dbg !55<br class="gmail_msg">
+ %74 = call i8* @objc_retainAutoreleasedReturnValue(i8* %call2) #3, !dbg !55<br class="gmail_msg">
+ %75 = bitcast %0** %5 to i8**, !dbg !56<br class="gmail_msg">
+ call void @objc_storeStrong(i8** %75, i8* null) #3, !dbg !56<br class="gmail_msg">
+ %76 = tail call i8* @objc_autoreleaseReturnValue(i8* %74) #3, !dbg !56<br class="gmail_msg">
+ store i64 1172321806, i64* %6, !dbg !56<br class="gmail_msg">
+ %77 = add i64 %12, 0, !dbg !56<br class="gmail_msg">
+ %78 = inttoptr i64 %77 to i64*, !dbg !56<br class="gmail_msg">
+ store i64 0, i64* %78, align 1, !dbg !56<br class="gmail_msg">
+ %79 = add i64 %12, 9, !dbg !56<br class="gmail_msg">
+ %80 = inttoptr i64 %79 to i16*, !dbg !56<br class="gmail_msg">
+ store i16 0, i16* %80, align 1, !dbg !56<br class="gmail_msg">
+ %81 = add i64 %12, 11, !dbg !56<br class="gmail_msg">
+ %82 = inttoptr i64 %81 to i8*, !dbg !56<br class="gmail_msg">
+ store i8 0, i8* %82, align 1, !dbg !56<br class="gmail_msg">
+ ret i8* %76, !dbg !56<br class="gmail_msg">
+}<br class="gmail_msg">
+<br class="gmail_msg">
+; Function Attrs: nounwind readnone<br class="gmail_msg">
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1<br class="gmail_msg">
+<br class="gmail_msg">
+; Function Attrs: nonlazybind<br class="gmail_msg">
+declare i8* @objc_msgSend(i8*, i8*, ...) #2<br class="gmail_msg">
+<br class="gmail_msg">
+declare i8* @objc_retainAutoreleasedReturnValue(i8* returned)<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @objc_storeStrong(i8**, i8*)<br class="gmail_msg">
+<br class="gmail_msg">
+declare i8* @objc_autoreleaseReturnValue(i8* returned)<br class="gmail_msg">
+<br class="gmail_msg">
+define internal void @asan.module_ctor() {<br class="gmail_msg">
+ call void @__asan_init()<br class="gmail_msg">
+ call void @__asan_version_mismatch_check_v8()<br class="gmail_msg">
+ ret void<br class="gmail_msg">
+}<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @__asan_init()<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @__asan_version_mismatch_check_v8()<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @__asan_report_load8(i64)<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @__asan_report_load16(i64)<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @__asan_report_store8(i64)<br class="gmail_msg">
+<br class="gmail_msg">
+declare void @__asan_report_store16(i64)<br class="gmail_msg">
+<br class="gmail_msg">
+attributes #0 = { noinline sanitize_address ssp uwtable }<br class="gmail_msg">
+attributes #1 = { nounwind readnone }<br class="gmail_msg">
+attributes #2 = { nonlazybind }<br class="gmail_msg">
+attributes #3 = { nounwind }<br class="gmail_msg">
+<br class="gmail_msg">
+!<a href="http://llvm.dbg.cu" rel="noreferrer" class="gmail_msg" target="_blank">llvm.dbg.cu</a> = !{!0}<br class="gmail_msg">
+!llvm.module.flags = !{!5, !6, !7, !8, !9, !10, !11, !12}<br class="gmail_msg">
+!llvm.ident = !{!13}<br class="gmail_msg">
+<br class="gmail_msg">
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, file: !1, producer: "clang version 5.0.0 (trunk 295779) (llvm/trunk 295777)", isOptimized: false, runtimeVersion: 2, emissionKind: FullDebug, enums: !2, retainedTypes: !3)<br class="gmail_msg">
+!1 = !DIFile(filename: "m.m", directory: "/")<br class="gmail_msg">
+!2 = !{}<br class="gmail_msg">
+!3 = !{!4}<br class="gmail_msg">
+!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "MyObject", scope: !1, file: !1, line: 15, flags: DIFlagObjcClassComplete, elements: !2, runtimeLang: DW_LANG_ObjC)<br class="gmail_msg">
+!5 = !{i32 1, !"Objective-C Version", i32 2}<br class="gmail_msg">
+!6 = !{i32 1, !"Objective-C Image Info Version", i32 0}<br class="gmail_msg">
+!7 = !{i32 1, !"Objective-C Image Info Section", !"__DATA, __objc_imageinfo, regular, no_dead_strip"}<br class="gmail_msg">
+!8 = !{i32 4, !"Objective-C Garbage Collection", i32 0}<br class="gmail_msg">
+!9 = !{i32 1, !"Objective-C Class Properties", i32 64}<br class="gmail_msg">
+!10 = !{i32 2, !"Dwarf Version", i32 2}<br class="gmail_msg">
+!11 = !{i32 2, !"Debug Info Version", i32 3}<br class="gmail_msg">
+!12 = !{i32 1, !"PIC Level", i32 2}<br class="gmail_msg">
+!13 = !{!"clang version 5.0.0 (trunk 295779) (llvm/trunk 295777)"}<br class="gmail_msg">
+!14 = distinct !DISubprogram(name: "+[MyObject doWithSize:]", scope: !1, file: !1, line: 16, type: !15, isLocal: true, isDefinition: true, scopeLine: 16, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)<br class="gmail_msg">
+!15 = !DISubroutineType(types: !16)<br class="gmail_msg">
+!16 = !{!17, !24, !26, !29}<br class="gmail_msg">
+!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "id", file: !1, baseType: !18)<br class="gmail_msg">
+!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64)<br class="gmail_msg">
+!19 = !DICompositeType(tag: DW_TAG_structure_type, name: "objc_object", file: !1, elements: !20)<br class="gmail_msg">
+!20 = !{!21}<br class="gmail_msg">
+!21 = !DIDerivedType(tag: DW_TAG_member, name: "isa", scope: !19, file: !1, baseType: !22, size: 64)<br class="gmail_msg">
+!22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !23, size: 64)<br class="gmail_msg">
+!23 = !DICompositeType(tag: DW_TAG_structure_type, name: "objc_class", file: !1, flags: DIFlagFwdDecl)<br class="gmail_msg">
+!24 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !25, flags: DIFlagArtificial | DIFlagObjectPointer)<br class="gmail_msg">
+!25 = !DIDerivedType(tag: DW_TAG_typedef, name: "Class", file: !1, baseType: !22)<br class="gmail_msg">
+!26 = !DIDerivedType(tag: DW_TAG_typedef, name: "SEL", file: !1, baseType: !27, flags: DIFlagArtificial)<br class="gmail_msg">
+!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)<br class="gmail_msg">
+!28 = !DICompositeType(tag: DW_TAG_structure_type, name: "objc_selector", file: !1, flags: DIFlagFwdDecl)<br class="gmail_msg">
+!29 = !DIDerivedType(tag: DW_TAG_typedef, name: "CGSize", file: !1, line: 10, baseType: !30)<br class="gmail_msg">
+!30 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "CGSize", file: !1, line: 6, size: 128, elements: !31)<br class="gmail_msg">
+!31 = !{!32, !34}<br class="gmail_msg">
+!32 = !DIDerivedType(tag: DW_TAG_member, name: "width", scope: !30, file: !1, line: 7, baseType: !33, size: 64)<br class="gmail_msg">
+!33 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)<br class="gmail_msg">
+!34 = !DIDerivedType(tag: DW_TAG_member, name: "height", scope: !30, file: !1, line: 8, baseType: !33, size: 64, offset: 64)<br class="gmail_msg">
+!35 = !DILocation(line: 16, scope: !14)<br class="gmail_msg">
+!36 = !DILocalVariable(name: "imageSize", arg: 3, scope: !14, file: !1, line: 16, type: !29)<br class="gmail_msg">
+!37 = !DIExpression(DW_OP_deref)<br class="gmail_msg">
+!38 = !DILocation(line: 16, column: 26, scope: !14)<br class="gmail_msg">
+!39 = !DILocalVariable(name: "object", scope: !14, file: !1, line: 17, type: !40)<br class="gmail_msg">
+!40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !41, size: 64)<br class="gmail_msg">
+!41 = !DICompositeType(tag: DW_TAG_structure_type, name: "Object", scope: !1, file: !1, line: 11, elements: !42, runtimeLang: DW_LANG_ObjC)<br class="gmail_msg">
+!42 = !{!43}<br class="gmail_msg">
+!43 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !41, baseType: !44)<br class="gmail_msg">
+!44 = !DICompositeType(tag: DW_TAG_structure_type, name: "NSObject", scope: !1, file: !1, line: 3, elements: !2, runtimeLang: DW_LANG_ObjC)<br class="gmail_msg">
+!45 = !DILocation(line: 17, column: 11, scope: !14)<br class="gmail_msg">
+!46 = !DILocalVariable(name: "self", arg: 1, scope: !14, type: !47, flags: DIFlagArtificial | DIFlagObjectPointer)<br class="gmail_msg">
+!47 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !25)<br class="gmail_msg">
+!48 = !DIExpression()<br class="gmail_msg">
+!49 = !DILocation(line: 0, scope: !14)<br class="gmail_msg">
+!50 = !DILocalVariable(name: "_cmd", arg: 2, scope: !14, type: !51, flags: DIFlagArtificial)<br class="gmail_msg">
+!51 = !DIDerivedType(tag: DW_TAG_typedef, name: "SEL", file: !1, baseType: !27)<br class="gmail_msg">
+!52 = !DILocation(line: 17, column: 21, scope: !14)<br class="gmail_msg">
+!53 = !DILocation(line: 17, column: 20, scope: !14)<br class="gmail_msg">
+!54 = !DILocation(line: 18, column: 11, scope: !14)<br class="gmail_msg">
+!55 = !DILocation(line: 18, column: 10, scope: !14)<br class="gmail_msg">
+!56 = !DILocation(line: 19, column: 1, scope: !14)<br class="gmail_msg">
<br class="gmail_msg">
<br class="gmail_msg">
_______________________________________________<br class="gmail_msg">
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</blockquote></div></div>