Mesa (master): draw: Reuse xmm registers.

[Keith Whitwell]

Module: Mesa
Branch: master
Commit: 8ef377d76b721f2f62ca30a073fcfd312c155e95
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8ef377d76b721f2f62ca30a073fcfd312c155e95

Author: Keith Whitwell <keithw at vmware.com>
Date:   Tue Feb 17 21:45:54 2009 +0000

draw: Reuse xmm registers.

---

 src/gallium/auxiliary/draw/draw_vs_aos.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c
index 6141ba9..875ecb9 100644
--- a/src/gallium/auxiliary/draw/draw_vs_aos.c
+++ b/src/gallium/auxiliary/draw/draw_vs_aos.c
@@ -284,6 +284,15 @@ void aos_release_xmm_reg( struct aos_compilation *cp,
 }
 
 
+static void aos_soft_release_xmm( struct aos_compilation *cp,
+                                  struct x86_reg reg )
+{
+   if (reg.file == file_XMM) {
+      assert(cp->xmm[reg.idx].last_used == cp->insn_counter);
+      cp->xmm[reg.idx].last_used = cp->insn_counter - 1;
+   }
+}
+
 
      
 /* Mark an xmm reg as holding the current copy of a shader reg.
@@ -584,10 +593,12 @@ static struct x86_reg fetch_src( struct aos_compilation *cp,
          sse_mulps(cp->func, dst, tmp);
 
          aos_release_xmm_reg(cp, tmp.idx);
+         aos_soft_release_xmm(cp, imm_swz);
       }
       else if (negs) {
          struct x86_reg imm_negs = aos_get_internal_xmm(cp, IMM_NEGS);
          sse_mulps(cp->func, dst, imm_negs);
+         aos_soft_release_xmm(cp, imm_negs);
       }
 
 
@@ -603,8 +614,10 @@ static struct x86_reg fetch_src( struct aos_compilation *cp,
          sse_maxps(cp->func, dst, tmp);
 
          aos_release_xmm_reg(cp, tmp.idx);
+         aos_soft_release_xmm(cp, neg);
       }
 
+      aos_soft_release_xmm(cp, arg0);
       return dst;
    }