diff options
Diffstat (limited to 'src/cuda-sim/cuda-sim.cc')
| -rw-r--r-- | src/cuda-sim/cuda-sim.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/cuda-sim/cuda-sim.cc b/src/cuda-sim/cuda-sim.cc index 1dbff50..cba5262 100644 --- a/src/cuda-sim/cuda-sim.cc +++ b/src/cuda-sim/cuda-sim.cc @@ -844,7 +844,8 @@ void ptx_instruction::pre_decode() for ( ; opr != op_iter_end(); opr++, n++ ) { //process operands const operand_info &o = *opr; if ( has_dst && n==0 ) { - if ( o.is_reg() ) { + // Do not set the null register "_" as an architectural register + if ( o.is_reg() && !o.is_non_arch_reg() ) { out[0] = o.reg_num(); arch_reg.dst[0] = o.arch_reg_num(); } else if ( o.is_vector() ) { @@ -858,7 +859,7 @@ void ptx_instruction::pre_decode() arch_reg.dst[i] = o.arch_reg_num(i); } } else { - if ( o.is_reg() ) { + if ( o.is_reg() && !o.is_non_arch_reg() ) { int reg_num = o.reg_num(); arch_reg.src[m] = o.arch_reg_num(); switch ( m ) { @@ -898,6 +899,8 @@ void ptx_instruction::pre_decode() const operand_info &o = *op; if(o.is_memory_operand()) { + // We do not support the null register as a memory operand + assert( !o.is_non_arch_reg() ); // Check PTXPlus-type operand // memory operand with addressing (ex. s[0x4] or g[$r1]) |