---
src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
index cd89edd..a9bf0d8 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_reg_allocate.cpp
@@ -343,13 +343,17 @@ vec4_visitor::spill_reg(int spill_reg_nr)
/* Generate spill/unspill instructions for the objects being spilled. */
foreach_block_and_inst(block, vec4_instruction, inst, cfg) {
+ int scratch_reg = -1;
for (unsigned int i = 0; i < 3; i++) {
if (inst->src[i].file == GRF && inst->src[i].reg == spill_reg_nr) {
- src_reg spill_reg = inst->src[i];
- inst->src[i].reg = alloc.allocate(1);
- dst_reg temp = dst_reg(inst->src[i]);
-
- emit_scratch_read(block, inst, temp, spill_reg, spill_offset);
+ if (scratch_reg == -1) {
+ scratch_reg = alloc.allocate(1);
+ src_reg temp = inst->src[i];
+ temp.reg = scratch_reg;
+ emit_scratch_read(block, inst,
+ dst_reg(temp), inst->src[i], spill_offset);
+ }
+ inst->src[i].reg = scratch_reg;
}
}
--
1.9.1
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