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Add support for GCC compatible builtin setjmp and longjmp intrinsics. This is

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a supporting preliminary patch for GCC-compatible SjLJ exception handling. Note that these intrinsics are not designed to be invoked directly by the user, but
rather used by the front-end as target hooks for exception handling.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71610 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2009-05-12 23:59:14 +00:00
parent 9d3094b38e
commit 0e0da734bb
9 changed files with 77 additions and 5 deletions
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6
lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
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@@ -3849,6 +3849,12 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
case Intrinsic::longjmp:
return "_longjmp"+!TLI.usesUnderscoreLongJmp();
break;
case Intrinsic::builtinsetjmp:
// Mark this function has using builtin_setjmp so context gets preserved
DAG.getMachineFunction().setHasBuiltinSetjmp(true);
// Turn it into a target intrinsic node for the codegen
visitTargetIntrinsic(I, Intrinsic);
return 0;
case Intrinsic::memcpy: {
SDValue Op1 = getValue(I.getOperand(1));
SDValue Op2 = getValue(I.getOperand(2));