summaryrefslogtreecommitdiffstats
path: root/src/gallium/auxiliary
diff options
context:
space:
mode:
authorBrian Paul <[email protected]>2010-01-08 08:21:12 -0700
committerBrian Paul <[email protected]>2010-01-08 08:21:12 -0700
commitfd70841121475d7aad98812d6bf9c9c67567b89a (patch)
tree13f7eef837abc0151dc663a2b6fed04d7f2cc578 /src/gallium/auxiliary
parenta1de400e8de06a80ab140bb0fa950e990607572d (diff)
parent674c76310fe93dd3d7a15af0f72bb9f04351d09f (diff)
Merge branch 'mesa_7_7_branch'
Conflicts: src/mesa/drivers/dri/i965/brw_wm_emit.c
Diffstat (limited to 'src/gallium/auxiliary')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_sse2.c50
1 files changed, 30 insertions, 20 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_sse2.c b/src/gallium/auxiliary/tgsi/tgsi_sse2.c
index 2e13a7aaf9d..a85cc4659e0 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sse2.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sse2.c
@@ -2146,40 +2146,50 @@ emit_instruction(
break;
case TGSI_OPCODE_XPD:
+ /* Note: we do all stores after all operands have been fetched
+ * to avoid src/dst register aliasing issues for an instruction
+ * such as: XPD TEMP[2].xyz, TEMP[0], TEMP[2];
+ */
if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ) {
- FETCH( func, *inst, 1, 1, CHAN_Z );
- FETCH( func, *inst, 3, 0, CHAN_Z );
+ FETCH( func, *inst, 1, 1, CHAN_Z ); /* xmm[1] = src[1].z */
+ FETCH( func, *inst, 3, 0, CHAN_Z ); /* xmm[3] = src[0].z */
}
if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) {
- FETCH( func, *inst, 0, 0, CHAN_Y );
- FETCH( func, *inst, 4, 1, CHAN_Y );
+ FETCH( func, *inst, 0, 0, CHAN_Y ); /* xmm[0] = src[0].y */
+ FETCH( func, *inst, 4, 1, CHAN_Y ); /* xmm[4] = src[1].y */
}
IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) {
- emit_MOV( func, 2, 0 );
- emit_mul( func, 2, 1 );
- emit_MOV( func, 5, 3 );
- emit_mul( func, 5, 4 );
- emit_sub( func, 2, 5 );
- STORE( func, *inst, 2, 0, CHAN_X );
+ emit_MOV( func, 7, 0 ); /* xmm[7] = xmm[0] */
+ emit_mul( func, 7, 1 ); /* xmm[7] = xmm[2] * xmm[1] */
+ emit_MOV( func, 5, 3 ); /* xmm[5] = xmm[3] */
+ emit_mul( func, 5, 4 ); /* xmm[5] = xmm[5] * xmm[4] */
+ emit_sub( func, 7, 5 ); /* xmm[7] = xmm[2] - xmm[5] */
+ /* store xmm[7] in dst.x below */
}
if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ||
IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) {
- FETCH( func, *inst, 2, 1, CHAN_X );
- FETCH( func, *inst, 5, 0, CHAN_X );
+ FETCH( func, *inst, 2, 1, CHAN_X ); /* xmm[2] = src[1].x */
+ FETCH( func, *inst, 5, 0, CHAN_X ); /* xmm[5] = src[0].x */
}
IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) {
- emit_mul( func, 3, 2 );
- emit_mul( func, 1, 5 );
- emit_sub( func, 3, 1 );
- STORE( func, *inst, 3, 0, CHAN_Y );
+ emit_mul( func, 3, 2 ); /* xmm[3] = xmm[3] * xmm[2] */
+ emit_mul( func, 1, 5 ); /* xmm[1] = xmm[1] * xmm[5] */
+ emit_sub( func, 3, 1 ); /* xmm[3] = xmm[3] - xmm[1] */
+ /* store xmm[3] in dst.y below */
}
IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) {
- emit_mul( func, 5, 4 );
- emit_mul( func, 0, 2 );
- emit_sub( func, 5, 0 );
- STORE( func, *inst, 5, 0, CHAN_Z );
+ emit_mul( func, 5, 4 ); /* xmm[5] = xmm[5] * xmm[4] */
+ emit_mul( func, 0, 2 ); /* xmm[0] = xmm[0] * xmm[2] */
+ emit_sub( func, 5, 0 ); /* xmm[5] = xmm[5] - xmm[0] */
+ STORE( func, *inst, 5, 0, CHAN_Z ); /* dst.z = xmm[5] */
+ }
+ IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) {
+ STORE( func, *inst, 7, 0, CHAN_X ); /* dst.x = xmm[7] */
+ }
+ IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) {
+ STORE( func, *inst, 3, 0, CHAN_Y ); /* dst.y = xmm[3] */
}
IF_IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W ) {
emit_tempf(