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authorZack Rusin <zackr@vmware.com>2010-03-02 10:18:29 -0500
committerZack Rusin <zackr@vmware.com>2010-03-02 10:19:56 -0500
commitfaf8215bae70f020420242dc812ef141fdcf5417 (patch)
tree856eea93b58f60bf4cb0d714a7d4a35fe9ff16e8 /src
parent0c616da24114a22e7a6ad6e333cf4e836a91e95f (diff)
llvmpipe: improve based on review from Jose and fix else clauses
else was broken in the outter most else statemants, plus the code didn't need an inverted mask to compute the inverse of the current condition.
Diffstat (limited to 'src')
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index 81b0ab760e..ae866243a9 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -96,8 +96,6 @@ struct lp_exec_mask {
LLVMValueRef cond_mask;
LLVMValueRef exec_mask;
-
- LLVMValueRef inv_mask;
};
struct lp_build_tgsi_soa_context
@@ -149,9 +147,6 @@ static void lp_exec_mask_init(struct lp_exec_mask *mask, struct lp_build_context
mask->cond_stack_size = 0;
mask->int_vec_type = lp_build_int_vec_type(mask->bld->type);
- mask->inv_mask =
- LLVMConstSub(LLVMConstNull(mask->int_vec_type),
- LLVMConstAllOnes(mask->int_vec_type));
}
static void lp_exec_mask_update(struct lp_exec_mask *mask)
@@ -174,9 +169,15 @@ static void lp_exec_mask_cond_push(struct lp_exec_mask *mask,
static void lp_exec_mask_cond_invert(struct lp_exec_mask *mask)
{
LLVMValueRef prev_mask = mask->cond_stack[mask->cond_stack_size - 1];
- LLVMValueRef inv_mask = LLVMBuildXor(mask->bld->builder,
- mask->cond_mask,
- mask->inv_mask, "");
+ LLVMValueRef inv_mask = LLVMBuildNot(mask->bld->builder,
+ mask->cond_mask, "");
+
+ /* means that we didn't have any mask before and that
+ * we were fully enabled */
+ if (mask->cond_stack_size <= 1) {
+ prev_mask = LLVMConstAllOnes(mask->int_vec_type);
+ }
+
mask->cond_mask = LLVMBuildAnd(mask->bld->builder,
inv_mask,
prev_mask, "");