http://llvm.org/bugs/show_bug.cgi?id=3505
Summary: MultiSource/Applications/minisat jit failure due to
inline asm
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: minor
Priority: P2
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
JIT doesn't support inline asm so:
llvm-dis Output/minisat.llvm.bc -o -|grep asm
call void asm "fnstcw $0", "=*m,~{dirflag},~{fpsr},~{flags}"(i16*
%oldcw) nounwind
call void asm sideeffect "fldcw $0",
"*m,~{dirflag},~{fpsr},~{flags}"(i16* %newcw) nounwind
This is because the code uses _FPU_GETCW/SETCW:
#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
__asm__ ("fnstcw %0" : "=m" (*&oldcw)); newcw = (oldcw & ~0x300) | 0x200;
__asm__ ("fldcw %0" : : "m" (*&newcw));
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