diff options
Diffstat (limited to 'src/cuda-sim/instructions.cc')
| -rw-r--r-- | src/cuda-sim/instructions.cc | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc index e7bb50a..99d7399 100644 --- a/src/cuda-sim/instructions.cc +++ b/src/cuda-sim/instructions.cc @@ -1452,6 +1452,20 @@ ptx_reg_t sext( ptx_reg_t x, unsigned from_width, unsigned to_width, int to_sign return x; } +// sign extend depending on the destination register size - hack to get SobelFilter working in CUDA 4.2 +ptx_reg_t sexd( ptx_reg_t x, unsigned from_width, unsigned to_width, int to_sign, int rounding_mode, int saturation_mode ) +{ + x=chop(x,0,from_width,0,rounding_mode,saturation_mode); + switch ( to_width ) { + case 8: if ( x.get_bit(7) ) x.mask_or(0xFFFFFFFF,0xFFFFFF00);break; + case 16:if ( x.get_bit(15) ) x.mask_or(0xFFFFFFFF,0xFFFF0000);break; + case 32: if ( x.get_bit(31) ) x.mask_or(0xFFFFFFFF,0x00000000);break; + case 64: break; + default: assert(0); + } + return x; +} + ptx_reg_t zext( ptx_reg_t x, unsigned from_width, unsigned to_width, int to_sign, int rounding_mode, int saturation_mode ) { return chop(x,0,from_width,0,rounding_mode,saturation_mode); @@ -1748,7 +1762,7 @@ ptx_reg_t (*g_cvt_fn[11][11])( ptx_reg_t x, unsigned from_width, unsigned to_wid int rounding_mode, int saturation_mode ) = { { NULL, sext, sext, sext, NULL, sext, sext, sext, s2f, s2f, s2f}, { chop, NULL, sext, sext, chop, NULL, sext, sext, s2f, s2f, s2f}, - { chop, chop, NULL, sext, chop, chop, NULL, sext, s2f, s2f, s2f}, + { chop, sexd, NULL, sext, chop, chop, NULL, sext, s2f, s2f, s2f}, { chop, chop, chop, NULL, chop, chop, chop, NULL, s2f, s2f, s2f}, { NULL, zext, zext, zext, NULL, zext, zext, zext, u2f, u2f, u2f}, { chop, NULL, zext, zext, chop, NULL, zext, zext, u2f, u2f, u2f}, |