[Mesa-stable] [PATCH] nv50/ir: copy over value's register id when resolving merge of a phi

Ilia Mirkin imirkin at alum.mit.edu
Wed Oct 12 00:51:43 UTC 2016


The offset needs to be properly copied over to the phi value, otherwise
it will get assigned to the base of the merge instead of the proper
location.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Cc: mesa-stable at lists.freedesktop.org
---
 src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
index 7e64f7c..d36c853 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
@@ -1905,8 +1905,10 @@ GCRA::resolveSplitsAndMerges()
          // their registers should be identical.
          if (v->getInsn()->op == OP_PHI || v->getInsn()->op == OP_UNION) {
             Instruction *phi = v->getInsn();
-            for (int phis = 0; phi->srcExists(phis); ++phis)
+            for (int phis = 0; phi->srcExists(phis); ++phis) {
                phi->getSrc(phis)->join = v;
+               phi->getSrc(phis)->reg.data.id = v->reg.data.id;
+            }
          }
          reg += v->reg.size;
       }
-- 
2.7.3



More information about the mesa-stable mailing list