Mark setjmp as "returns twice" and turn off SimpleCoalescing when called.
BUG=none
R=stichnot@chromium.org
Review URL: https://codereview.chromium.org/567553003
diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index a3410eb..b15c4f1 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -141,6 +141,12 @@
virtual llvm::ArrayRef<uint8_t> getNonExecBundlePadding() const = 0;
bool hasComputedFrame() const { return HasComputedFrame; }
bool shouldDoNopInsertion() const;
+ // Returns true if this function calls a function that has the
+ // "returns twice" attribute.
+ bool callsReturnsTwice() const { return CallsReturnsTwice; }
+ void setCallsReturnsTwice(bool RetTwice) {
+ CallsReturnsTwice = RetTwice;
+ }
int32_t getStackAdjustment() const { return StackAdjustment; }
void updateStackAdjustment(int32_t Offset) { StackAdjustment += Offset; }
void resetStackAdjustment() { StackAdjustment = 0; }
@@ -176,7 +182,7 @@
protected:
TargetLowering(Cfg *Func)
: Func(Func), Ctx(Func->getContext()), HasComputedFrame(false),
- StackAdjustment(0) {}
+ CallsReturnsTwice(false), StackAdjustment(0) {}
virtual void lowerAlloca(const InstAlloca *Inst) = 0;
virtual void lowerArithmetic(const InstArithmetic *Inst) = 0;
virtual void lowerAssign(const InstAssign *Inst) = 0;
@@ -210,6 +216,7 @@
Cfg *Func;
GlobalContext *Ctx;
bool HasComputedFrame;
+ bool CallsReturnsTwice;
// StackAdjustment keeps track of the current stack offset from its
// natural location, as arguments are pushed for a function call.
int32_t StackAdjustment;