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Make dyngen_barrier() stronger on x86

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GCC 5 will optimize out an empty 'asm volatile' in op_sraw_T0_T1, and then give us multiple return points. Add a nop so it doesn't do this, at the cost of lower code density.
This commit is contained in:
Dave Vasilevsky 2015-12-28 23:28:17 -05:00
parent c91ef547bd
commit f64b888f78
1 changed files with 4 additions and 0 deletions
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4
SheepShaver/src/kpx_cpu/src/cpu/jit/dyngen-exec.h
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@ -61,7 +61,11 @@
#endif
// Force only one return point
#if defined(__i386__) || defined(__x86_64__)
#define dyngen_barrier() asm volatile ("nop")
#else
#define dyngen_barrier() asm volatile ("")
#endif
#ifndef OPPROTO
#define OPPROTO