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authorEric Anholt <[email protected]>2014-10-09 15:07:24 +0200
committerEric Anholt <[email protected]>2014-10-09 21:47:06 +0200
commit1cd8c1aab04c4da9aa6cbbd52460607b8416ce1b (patch)
tree385a1c116fa5d070d6f13ca82c20a618641e2bd3 /src/gallium/drivers/vc4
parent40748cf8d9b9f4d72bcfb9872d891c1705a81b8d (diff)
vc4: Factor out the turn-it-into-a-mov in opt_algebraic.
This will be used more in the next commits.
Diffstat (limited to 'src/gallium/drivers/vc4')
-rw-r--r--src/gallium/drivers/vc4/vc4_opt_algebraic.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/src/gallium/drivers/vc4/vc4_opt_algebraic.c b/src/gallium/drivers/vc4/vc4_opt_algebraic.c
index e247f302ee9..8c6fcef5936 100644
--- a/src/gallium/drivers/vc4/vc4_opt_algebraic.c
+++ b/src/gallium/drivers/vc4/vc4_opt_algebraic.c
@@ -77,6 +77,16 @@ is_zero(struct vc4_compile *c, struct qinst **defs, struct qreg reg)
c->uniform_data[reg.index] == 0);
}
+static void
+replace_with_mov(struct vc4_compile *c, struct qinst *inst, struct qreg arg)
+{
+ dump_from(c, inst);
+ inst->op = QOP_MOV;
+ inst->src[0] = arg;
+ inst->src[1] = c->undef;
+ dump_to(c, inst);
+}
+
bool
qir_opt_algebraic(struct vc4_compile *c)
{
@@ -115,12 +125,8 @@ qir_opt_algebraic(struct vc4_compile *c)
/* Turn "dst = (sf == x) ? a : a)" into
* "dst = a"
*/
- dump_from(c, inst);
- inst->op = QOP_MOV;
- inst->src[0] = inst->src[1];
- inst->src[1] = c->undef;
+ replace_with_mov(c, inst, inst->src[1]);
progress = true;
- dump_to(c, inst);
} else if (is_zero(c, defs, inst->src[1])) {
/* Replace references to a 0 uniform value
* with the SEL_X_0 equivalent.
@@ -136,11 +142,7 @@ qir_opt_algebraic(struct vc4_compile *c)
case QOP_FSUB:
case QOP_SUB:
if (is_zero(c, defs, inst->src[1])) {
- dump_from(c, inst);
- inst->op = QOP_MOV;
- inst->src[1] = c->undef;
- progress = true;
- dump_to(c, inst);
+ replace_with_mov(c, inst, inst->src[0]);
}
break;