From: Eric Anholt <eric@anholt.net>
Date: Mon, 25 Aug 2014 00:43:02 +0000 (-0700)
Subject: vc4: Ignore WADDRs from the other half of the instruction when merging.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1a7035f386c4402b07e7a2073daf914f95bd0a02;p=mesa.git

vc4: Ignore WADDRs from the other half of the instruction when merging.

This allows setting the opposite-side WADDR to NOP (a non-zero value) in
qpu_* helpers, so that we don't need to qpu_inst() merge them with NOPs
all the time just to get the waddr set.
---

diff --git a/src/gallium/drivers/vc4/vc4_qpu.c b/src/gallium/drivers/vc4/vc4_qpu.c
index d74dee5689e..35c65dc2eb3 100644
--- a/src/gallium/drivers/vc4/vc4_qpu.c
+++ b/src/gallium/drivers/vc4/vc4_qpu.c
@@ -192,7 +192,8 @@ qpu_m_alu2(enum qpu_op_mul op,
 uint64_t
 qpu_inst(uint64_t add, uint64_t mul)
 {
-        uint64_t merge = add | mul;
+        uint64_t merge = ((add & ~QPU_WADDR_MUL_MASK) |
+                          (mul & ~QPU_WADDR_ADD_MASK));
 
         /* If either one has no signal field, then use the other's signal field.
          * (since QPU_SIG_NONE != 0).