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i965: Don't compute-to-MRF in gen6 math instructions.

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This commit is contained in:
Eric Anholt
2010-10-11 13:38:38 -07:00
parent 7b5bc38c44
commit 317dbf4613
1 changed files with 16 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_fs.cpp
+16
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@@ -2616,6 +2616,22 @@ fs_visitor::compute_to_mrf()
if (scan_inst->mlen)
break;
if (intel->gen >= 6) {
/* gen6 math instructions must have the destination be
* GRF, so no compute-to-MRF for them.
*/
if (scan_inst->opcode == FS_OPCODE_RCP ||
scan_inst->opcode == FS_OPCODE_RSQ ||
scan_inst->opcode == FS_OPCODE_SQRT ||
scan_inst->opcode == FS_OPCODE_EXP2 ||
scan_inst->opcode == FS_OPCODE_LOG2 ||
scan_inst->opcode == FS_OPCODE_SIN ||
scan_inst->opcode == FS_OPCODE_COS ||
scan_inst->opcode == FS_OPCODE_POW) {
break;
}
}
if (scan_inst->dst.reg_offset == inst->src[0].reg_offset) {
/* Found the creator of our MRF's source value. */
found = true;