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Fix PR4865. This syncs up the JIT's DWARF emitter with what's in the

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'DwarfException.cpp' file, which changed how CIEs were emitted, the sizes of
some fields, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81295 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2009-09-09 00:11:02 +00:00
parent 88e9758298
commit 9d48b555e2
2 changed files with 162 additions and 20 deletions
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41
lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
View File

@ -28,7 +28,6 @@
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm;
JITDwarfEmitter::JITDwarfEmitter(JIT& theJit) : Jit(theJit) {}
@ -56,7 +55,7 @@ unsigned char* JITDwarfEmitter::EmitDwarfTable(MachineFunction& F,
Result = EmitEHFrame(Personalities[MMI->getPersonalityIndex()], EHFramePtr,
StartFunction, EndFunction, ExceptionTable);
return Result;
}
@ -107,11 +106,9 @@ JITDwarfEmitter::EmitFrameMoves(intptr_t BaseLabelPtr,
JCE->emitULEB128Bytes(RI->getDwarfRegNum(Src.getReg(), true));
}
int Offset = -Src.getOffset();
JCE->emitULEB128Bytes(Offset);
JCE->emitULEB128Bytes(-Src.getOffset());
} else {
llvm_unreachable("Machine move no supported yet.");
llvm_unreachable("Machine move not supported yet.");
}
} else if (Src.isReg() &&
Src.getReg() == MachineLocation::VirtualFP) {
@ -119,7 +116,7 @@ JITDwarfEmitter::EmitFrameMoves(intptr_t BaseLabelPtr,
JCE->emitByte(dwarf::DW_CFA_def_cfa_register);
JCE->emitULEB128Bytes(RI->getDwarfRegNum(Dst.getReg(), true));
} else {
llvm_unreachable("Machine move no supported yet.");
llvm_unreachable("Machine move not supported yet.");
}
} else {
unsigned Reg = RI->getDwarfRegNum(Src.getReg(), true);
@ -466,11 +463,10 @@ unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
GlobalVariable *GV = TypeInfos[M - 1];
if (GV) {
if (TD->getPointerSize() == sizeof(int32_t)) {
if (TD->getPointerSize() == sizeof(int32_t))
JCE->emitInt32((intptr_t)Jit.getOrEmitGlobalVariable(GV));
} else {
else
JCE->emitInt64((intptr_t)Jit.getOrEmitGlobalVariable(GV));
}
} else {
if (TD->getPointerSize() == sizeof(int32_t))
JCE->emitInt32(0);
@ -508,7 +504,7 @@ JITDwarfEmitter::EmitCommonEHFrame(const Function* Personality) const {
JCE->emitULEB128Bytes(1);
JCE->emitSLEB128Bytes(stackGrowth);
JCE->emitByte(RI->getDwarfRegNum(RI->getRARegister(), true));
if (Personality) {
// Augmentation Size: 3 small ULEBs of one byte each, and the personality
// function which size is PointerSize.
@ -524,10 +520,9 @@ JITDwarfEmitter::EmitCommonEHFrame(const Function* Personality) const {
JCE->emitByte(dwarf::DW_EH_PE_sdata8);
JCE->emitInt64(((intptr_t)Jit.getPointerToGlobal(Personality)));
}
JCE->emitULEB128Bytes(dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4);
JCE->emitULEB128Bytes(dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4);
} else {
JCE->emitULEB128Bytes(1);
JCE->emitULEB128Bytes(dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4);
@ -566,13 +561,19 @@ JITDwarfEmitter::EmitEHFrame(const Function* Personality,
// If there is a personality and landing pads then point to the language
// specific data area in the exception table.
if (MMI->getPersonalityIndex()) {
JCE->emitULEB128Bytes(4);
if (Personality) {
JCE->emitULEB128Bytes(PointerSize == 4 ? 4 : 8);
if (!MMI->getLandingPads().empty()) {
JCE->emitInt32(ExceptionTable - (unsigned char*)JCE->getCurrentPCValue());
if (PointerSize == 4) {
if (!MMI->getLandingPads().empty())
JCE->emitInt32(ExceptionTable-(unsigned char*)JCE->getCurrentPCValue());
else
JCE->emitInt32((int)0);
} else {
JCE->emitInt32((int)0);
if (!MMI->getLandingPads().empty())
JCE->emitInt64(ExceptionTable-(unsigned char*)JCE->getCurrentPCValue());
else
JCE->emitInt64((int)0);
}
} else {
JCE->emitULEB128Bytes(0);
@ -621,7 +622,7 @@ unsigned JITDwarfEmitter::GetDwarfTableSizeInBytes(MachineFunction& F,
FinalSize += GetEHFrameSizeInBytes(Personalities[MMI->getPersonalityIndex()],
StartFunction);
return FinalSize;
}
@ -644,7 +645,7 @@ JITDwarfEmitter::GetEHFrameSizeInBytes(const Function* Personality,
FinalSize += 3 * PointerSize;
// If there is a personality and landing pads then point to the language
// specific data area in the exception table.
if (MMI->getPersonalityIndex()) {
if (Personality) {
FinalSize += MCAsmInfo::getULEB128Size(4);
FinalSize += PointerSize;
} else {

141
test/ExecutionEngine/jit-eh-x86-64.ll Normal file
View File

@ -0,0 +1,141 @@
; RUN: llvm-as %s -o %t.bc
; RUN: lli -march=x86-64 %t.bc > /dev/null
; PR4865
%struct.__fundamental_type_info_pseudo = type { %struct.__type_info_pseudo }
%struct.__type_info_pseudo = type { i8*, i8* }
@_ZTIi = external constant %struct.__fundamental_type_info_pseudo ; <%struct.__fundamental_type_info_pseudo*> [#uses=1]
@.str = private constant [3 x i8] c"ok\00", align 1 ; <[3 x i8]*> [#uses=1]
define i32 @main() ssp {
entry:
%retval = alloca i32 ; <i32*> [#uses=2]
%save_filt.5 = alloca i32 ; <i32*> [#uses=2]
%save_eptr.4 = alloca i8* ; <i8**> [#uses=2]
%0 = alloca i32 ; <i32*> [#uses=2]
%eh_exception = alloca i8* ; <i8**> [#uses=10]
%eh_selector = alloca i32 ; <i32*> [#uses=5]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
invoke void @_ZL3foov() ssp
to label %invcont unwind label %lpad
invcont: ; preds = %entry
br label %bb6
bb: ; preds = %ppad
%eh_value = load i8** %eh_exception ; <i8*> [#uses=1]
%1 = call i8* @__cxa_begin_catch(i8* %eh_value) nounwind ; <i8*> [#uses=0]
%2 = invoke i32 @puts(i8* getelementptr inbounds ([3 x i8]* @.str, i32 0, i32 0))
to label %invcont1 unwind label %lpad10 ; <i32> [#uses=0]
invcont1: ; preds = %bb
call void @__cxa_end_catch()
br label %bb6
bb2: ; preds = %ppad18
%eh_select = load i32* %eh_selector ; <i32> [#uses=1]
store i32 %eh_select, i32* %save_filt.5, align 4
%eh_value3 = load i8** %eh_exception ; <i8*> [#uses=1]
store i8* %eh_value3, i8** %save_eptr.4, align 4
invoke void @__cxa_end_catch()
to label %invcont4 unwind label %lpad14
invcont4: ; preds = %bb2
%3 = load i8** %save_eptr.4, align 4 ; <i8*> [#uses=1]
store i8* %3, i8** %eh_exception, align 4
%4 = load i32* %save_filt.5, align 4 ; <i32> [#uses=1]
store i32 %4, i32* %eh_selector, align 4
br label %Unwind
bb5: ; preds = %ppad19
call void @_ZSt9terminatev() noreturn nounwind
unreachable
bb6: ; preds = %invcont1, %invcont
store i32 0, i32* %0, align 4
%5 = load i32* %0, align 4 ; <i32> [#uses=1]
store i32 %5, i32* %retval, align 4
br label %return
return: ; preds = %bb6
%retval7 = load i32* %retval ; <i32> [#uses=1]
ret i32 %retval7
lpad: ; preds = %entry
%eh_ptr = call i8* @llvm.eh.exception() ; <i8*> [#uses=1]
store i8* %eh_ptr, i8** %eh_exception
%eh_ptr8 = load i8** %eh_exception ; <i8*> [#uses=1]
%eh_select9 = call i32 (i8*, i8*, ...)* @llvm.eh.selector.i32(i8* %eh_ptr8, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* null) ; <i32> [#uses=1]
store i32 %eh_select9, i32* %eh_selector
br label %ppad
lpad10: ; preds = %bb
%eh_ptr11 = call i8* @llvm.eh.exception() ; <i8*> [#uses=1]
store i8* %eh_ptr11, i8** %eh_exception
%eh_ptr12 = load i8** %eh_exception ; <i8*> [#uses=1]
%eh_select13 = call i32 (i8*, i8*, ...)* @llvm.eh.selector.i32(i8* %eh_ptr12, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* null) ; <i32> [#uses=1]
store i32 %eh_select13, i32* %eh_selector
br label %ppad18
lpad14: ; preds = %bb2
%eh_ptr15 = call i8* @llvm.eh.exception() ; <i8*> [#uses=1]
store i8* %eh_ptr15, i8** %eh_exception
%eh_ptr16 = load i8** %eh_exception ; <i8*> [#uses=1]
%eh_select17 = call i32 (i8*, i8*, ...)* @llvm.eh.selector.i32(i8* %eh_ptr16, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i32 1) ; <i32> [#uses=1]
store i32 %eh_select17, i32* %eh_selector
br label %ppad19
ppad: ; preds = %lpad
br label %bb
ppad18: ; preds = %lpad10
br label %bb2
ppad19: ; preds = %lpad14
br label %bb5
Unwind: ; preds = %invcont4
%eh_ptr20 = load i8** %eh_exception ; <i8*> [#uses=1]
call void @_Unwind_Resume_or_Rethrow(i8* %eh_ptr20)
unreachable
}
define internal void @_ZL3foov() ssp {
entry:
%0 = alloca i8* ; <i8**> [#uses=3]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
%1 = call i8* @__cxa_allocate_exception(i32 4) nounwind ; <i8*> [#uses=1]
store i8* %1, i8** %0, align 4
%2 = load i8** %0, align 4 ; <i8*> [#uses=1]
%3 = bitcast i8* %2 to i32* ; <i32*> [#uses=1]
store i32 42, i32* %3, align 4
%4 = load i8** %0, align 4 ; <i8*> [#uses=1]
call void @__cxa_throw(i8* %4, i8* bitcast (%struct.__fundamental_type_info_pseudo* @_ZTIi to i8*), void (i8*)* null) noreturn
unreachable
return: ; No predecessors!
ret void
}
declare i8* @__cxa_allocate_exception(i32) nounwind
declare void @__cxa_throw(i8*, i8*, void (i8*)*) noreturn
declare i8* @__cxa_begin_catch(i8*) nounwind
declare i8* @llvm.eh.exception() nounwind
declare i32 @llvm.eh.selector.i32(i8*, i8*, ...) nounwind
declare i32 @llvm.eh.typeid.for.i32(i8*) nounwind
declare i32 @puts(i8*)
declare void @__cxa_end_catch()
declare void @_ZSt9terminatev() noreturn nounwind
declare i32 @__gxx_personality_v0(...)
declare void @_Unwind_Resume_or_Rethrow(i8*)