diff mbox

[02/11] i965: step message register allocation

Message ID 1308944576-12740-3-git-send-email-ben@bwidawsk.net (mailing list archive)
State New, archived
Headers show

Commit Message

Ben Widawsky June 24, 2011, 7:42 p.m. UTC 
The system routine requires m0 be reserved. for saving off architectural
state. Moved the allocation to start at 2 instead of 0.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

Comments

Eric Anholt June 25, 2011, 12:29 a.m. UTC | #1 
On Fri, 24 Jun 2011 12:42:47 -0700, Ben Widawsky <ben@bwidawsk.net> wrote:
> The system routine requires m0 be reserved. for saving off architectural
> state. Moved the allocation to start at 2 instead of 0.
> 
> Signed-off-by: Ben Widawsky <ben@bwidawsk.net>

Reviewed-by: Eric Anholt <eric@anholt.net>
diff mbox

Patch

diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index b485787..d8957c5 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -1466,7 +1466,7 @@  fs_visitor::emit_dummy_fs()
 
    fs_inst *write;
    write = emit(FS_OPCODE_FB_WRITE, fs_reg(0), fs_reg(0));
-   write->base_mrf = 0;
+   write->base_mrf = 2;
 }
 
 /* The register location here is relative to the start of the URB
@@ -1627,7 +1627,7 @@  fs_visitor::emit_fb_writes()
 {
    this->current_annotation = "FB write header";
    GLboolean header_present = GL_TRUE;
-   int nr = 0;
+   int nr = 2;
    int reg_width = c->dispatch_width / 8;
 
    if (intel->gen >= 6 &&
@@ -1637,7 +1637,7 @@  fs_visitor::emit_fb_writes()
    }
 
    if (header_present) {
-      /* m0, m1 header */
+      /* m2, m3 header */
       nr += 2;
    }
 
@@ -1706,7 +1706,7 @@  fs_visitor::emit_fb_writes()
 
       fs_inst *inst = emit(FS_OPCODE_FB_WRITE);
       inst->target = target;
-      inst->base_mrf = 0;
+      inst->base_mrf = 2;
       inst->mlen = nr;
       if (target == c->key.nr_color_regions - 1)
 	 inst->eot = true;
@@ -1724,7 +1724,7 @@  fs_visitor::emit_fb_writes()
       }
 
       fs_inst *inst = emit(FS_OPCODE_FB_WRITE);
-      inst->base_mrf = 0;
+      inst->base_mrf = 2;
       inst->mlen = nr;
       inst->eot = true;
       inst->header_present = header_present;