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[INFER] Workaround for GCC 4.2 bug.

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This commit is contained in:
Brian Hackett 2010-12-07 09:42:43 -08:00
parent 89a73d27f0
commit 218d38d4e2
1 changed files with 14 additions and 4 deletions
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18
js/src/methodjit/MachineRegs.h
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@ -54,19 +54,19 @@ struct AnyRegisterID {
AnyRegisterID() AnyRegisterID()
: reg_((unsigned)-1) : reg_((unsigned)-1)
{} { pin(); }
AnyRegisterID(const AnyRegisterID &o) AnyRegisterID(const AnyRegisterID &o)
: reg_(o.reg_) : reg_(o.reg_)
{} { pin(); }
AnyRegisterID(JSC::MacroAssembler::RegisterID reg) AnyRegisterID(JSC::MacroAssembler::RegisterID reg)
: reg_((unsigned)reg) : reg_((unsigned)reg)
{} { pin(); }
AnyRegisterID(JSC::MacroAssembler::FPRegisterID reg) AnyRegisterID(JSC::MacroAssembler::FPRegisterID reg)
: reg_(JSC::MacroAssembler::TotalRegisters + (unsigned)reg) : reg_(JSC::MacroAssembler::TotalRegisters + (unsigned)reg)
{} { pin(); }
static inline AnyRegisterID fromRaw(unsigned reg); static inline AnyRegisterID fromRaw(unsigned reg);
@ -77,6 +77,16 @@ struct AnyRegisterID {
bool isSet() { return reg_ != unsigned(-1); } bool isSet() { return reg_ != unsigned(-1); }
inline const char * name(); inline const char * name();
private:
void pin() {
/*
* Workaround for apparent compiler bug in GCC 4.2. If GCC thinks that reg_
* cannot escape then it compiles isReg() and other accesses to reg_ incorrectly.
*/
static unsigned *v;
v = &reg_;
}
}; };
struct Registers { struct Registers {