diff options
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_flow.c')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_flow.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_flow.c b/src/gallium/auxiliary/gallivm/lp_bld_flow.c index d2b3713..30da44e 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_flow.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_flow.c @@ -131,6 +131,15 @@ lp_build_mask_check(struct lp_build_mask_context *mask) value = lp_build_mask_value(mask); + /* + * XXX this doesn't quite generate the most efficient code possible, if + * the masks are vectors which have all bits set to the same value + * in each element. + * movmskps/pmovmskb would be more efficient to get the required value + * into ordinary reg (certainly with 8 floats). + * Not sure if llvm could figure that out on its own. + */ + /* cond = (mask == 0) */ cond = LLVMBuildICmp(builder, LLVMIntEQ, |