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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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12
include/llvm/CodeGen/MachineFunction.h
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@ -70,6 +70,10 @@ class MachineFunction : private Annotation {
const Function *Fn;
const TargetMachine &Target;
// HasBuiltinSetjmp - true if the function uses builtin_setjmp. Used to
// adjust callee-saved register tracking.
bool HasBuiltinSetjmp;
// RegInfo - Information about each register in use in the function.
MachineRegisterInfo *RegInfo;
@ -123,6 +127,14 @@ public:
///
const TargetMachine &getTarget() const { return Target; }
/// doesHaveBuiltinSetjmp - Return whether this function uses builtin_setjmp
///
bool doesHaveBuiltinSetjmp() const { return HasBuiltinSetjmp; }
/// setHasBuiltinSetjmp - Mark whether this function uses builtin_setjmp
///
void setHasBuiltinSetjmp (bool flag) { HasBuiltinSetjmp = flag; }
/// getRegInfo - Return information about the registers currently in use.
///
MachineRegisterInfo &getRegInfo() { return *RegInfo; }