6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-03-17 05:31:32 +00:00
Code Issues Projects Releases Wiki Activity

Fix PR1833 - eh.exception and eh.selector return two

Browse Source 
values, which means doing extra legalization work.
It would be easier to get this kind of thing right if
there was some documentation...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45472 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2007-12-31 18:35:50 +00:00
parent d10fd9791c
commit b027fa001f
2 changed files with 64 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -858,7 +858,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Expand: {
unsigned Reg = TLI.getExceptionAddressRegister();
Result = DAG.getCopyFromReg(Tmp1, Reg, VT).getValue(Op.ResNo);
Result = DAG.getCopyFromReg(Tmp1, Reg, VT);
}
break;
case TargetLowering::Custom:
@ -868,12 +868,23 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case TargetLowering::Legal: {
SDOperand Ops[] = { DAG.getConstant(0, VT), Tmp1 };
Result = DAG.getNode(ISD::MERGE_VALUES, DAG.getVTList(VT, MVT::Other),
Ops, 2).getValue(Op.ResNo);
Ops, 2);
break;
}
}
}
break;
if (Result.Val->getNumValues() == 1) break;
assert(Result.Val->getNumValues() == 2 &&
"Cannot return more than two values!");
// Since we produced two values, make sure to remember that we
// legalized both of them.
Tmp1 = LegalizeOp(Result);
Tmp2 = LegalizeOp(Result.getValue(1));
AddLegalizedOperand(Op.getValue(0), Tmp1);
AddLegalizedOperand(Op.getValue(1), Tmp2);
return Op.ResNo ? Tmp2 : Tmp1;
case ISD::EHSELECTION: {
Tmp1 = LegalizeOp(Node->getOperand(0));
Tmp2 = LegalizeOp(Node->getOperand(1));
@ -882,7 +893,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Expand: {
unsigned Reg = TLI.getExceptionSelectorRegister();
Result = DAG.getCopyFromReg(Tmp2, Reg, VT).getValue(Op.ResNo);
Result = DAG.getCopyFromReg(Tmp2, Reg, VT);
}
break;
case TargetLowering::Custom:
@ -892,12 +903,23 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case TargetLowering::Legal: {
SDOperand Ops[] = { DAG.getConstant(0, VT), Tmp2 };
Result = DAG.getNode(ISD::MERGE_VALUES, DAG.getVTList(VT, MVT::Other),
Ops, 2).getValue(Op.ResNo);
Ops, 2);
break;
}
}
}
break;
if (Result.Val->getNumValues() == 1) break;
assert(Result.Val->getNumValues() == 2 &&
"Cannot return more than two values!");
// Since we produced two values, make sure to remember that we
// legalized both of them.
Tmp1 = LegalizeOp(Result);
Tmp2 = LegalizeOp(Result.getValue(1));
AddLegalizedOperand(Op.getValue(0), Tmp1);
AddLegalizedOperand(Op.getValue(1), Tmp2);
return Op.ResNo ? Tmp2 : Tmp1;
case ISD::EH_RETURN: {
MVT::ValueType VT = Node->getValueType(0);
// The only "good" option for this node is to custom lower it.

36
test/CodeGen/Generic/2007-12-31-UnusedSelector.ll Normal file
View File

@ -0,0 +1,36 @@
; RUN: llvm-as < %s | llc -enable-eh
; PR1833
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
target triple = "i686-pc-linux-gnu"
%struct.__class_type_info_pseudo = type { %struct.__type_info_pseudo }
%struct.__type_info_pseudo = type { i8*, i8* }
@_ZTI2e1 = external constant %struct.__class_type_info_pseudo ; <%struct.__class_type_info_pseudo*> [#uses=1]
define void @_Z7ex_testv() {
entry:
invoke void @__cxa_throw( i8* null, i8* bitcast (%struct.__class_type_info_pseudo* @_ZTI2e1 to i8*), void (i8*)* null ) noreturn
to label %UnifiedUnreachableBlock unwind label %lpad
bb14: ; preds = %lpad
unreachable
lpad: ; preds = %entry
invoke void @__cxa_end_catch( )
to label %bb14 unwind label %lpad17
lpad17: ; preds = %lpad
%eh_select20 = tail call i32 (i8*, i8*, ...)* @llvm.eh.selector.i32( i8* null, i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*), i8* null ) ; <i32> [#uses=0]
unreachable
UnifiedUnreachableBlock: ; preds = %entry
unreachable
}
declare void @__cxa_throw(i8*, i8*, void (i8*)*) noreturn
declare i32 @llvm.eh.selector.i32(i8*, i8*, ...)
declare void @__cxa_end_catch()
declare i32 @__gxx_personality_v0(...)