From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Thu, 27 Feb 2020 14:36:46 +0000 (-0500)
Subject: pan/midgard: Fix load/store argument sizing
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fd888d351f60c7dcfaff475c083c9be7bc1be626;p=mesa.git

pan/midgard: Fix load/store argument sizing

The swizzles are as-if they were 32-bit regardless of the bitness of the
operation, but the source sizes can and do change depending on the
flags. Account for this in the analysis.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3978>
---

diff --git a/src/panfrost/midgard/midgard_ra.c b/src/panfrost/midgard/midgard_ra.c
index ef3e7928044..f2fd8384cb4 100644
--- a/src/panfrost/midgard/midgard_ra.c
+++ b/src/panfrost/midgard/midgard_ra.c
@@ -682,16 +682,17 @@ install_registers_instr(
 
                 unsigned src2 = ins->src[1];
                 unsigned src3 = ins->src[2];
+                midgard_reg_mode m32 = midgard_reg_mode_32;
 
                 if (src2 != ~0) {
-                        struct phys_reg src = index_to_reg(ctx, l, src2, mir_srcsize(ins, 1));
+                        struct phys_reg src = index_to_reg(ctx, l, src2, m32);
                         unsigned component = src.offset / src.size;
                         assert(component * src.size == src.offset);
                         ins->load_store.arg_1 |= midgard_ldst_reg(src.reg, component);
                 }
 
                 if (src3 != ~0) {
-                        struct phys_reg src = index_to_reg(ctx, l, src3, mir_srcsize(ins, 2));
+                        struct phys_reg src = index_to_reg(ctx, l, src3, m32);
                         unsigned component = src.offset / src.size;
                         assert(component * src.size == src.offset);
                         ins->load_store.arg_2 |= midgard_ldst_reg(src.reg, component);
diff --git a/src/panfrost/midgard/mir.c b/src/panfrost/midgard/mir.c
index f07a51a6e42..2acfe445a2b 100644
--- a/src/panfrost/midgard/mir.c
+++ b/src/panfrost/midgard/mir.c
@@ -255,6 +255,17 @@ mir_typesize(midgard_instruction *ins)
 midgard_reg_mode
 mir_srcsize(midgard_instruction *ins, unsigned i)
 {
+        if (ins->type == TAG_LOAD_STORE_4) {
+                if (OP_HAS_ADDRESS(ins->load_store.op)) {
+                        if (i == 1)
+                                return midgard_reg_mode_64;
+                        else if (i == 2) {
+                                bool zext = ins->load_store.arg_1 & 0x80;
+                                return zext ? midgard_reg_mode_32 : midgard_reg_mode_64;
+                        }
+                }
+        }
+
         /* TODO: 16-bit textures/ldst */
         if (ins->type == TAG_TEXTURE_4 || ins->type == TAG_LOAD_STORE_4)
                 return midgard_reg_mode_32;