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tgis: fix SOA aliasing for MUL instruction in SSE codegen

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Part of a fix for piglit trinity-fp1 test failure.
This commit is contained in:
Brian Paul 2010-05-07 10:40:55 -06:00
parent 50c940707e
commit 12d74d6ba1
1 changed files with 11 additions and 4 deletions
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15
src/gallium/auxiliary/tgsi/tgsi_sse2.c
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@ -1929,11 +1929,17 @@ emit_instruction(
break;
case TGSI_OPCODE_MUL:
/* do all fetches and adds, storing results in temp regs */
FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
FETCH( func, *inst, 0, 0, chan_index );
FETCH( func, *inst, 1, 1, chan_index );
emit_mul( func, 0, 1 );
STORE( func, *inst, 0, 0, chan_index );
int r = chan_index + 1;
FETCH( func, *inst, 0, 0, chan_index ); /* load xmm[0] */
FETCH( func, *inst, r, 1, chan_index ); /* load xmm[r] */
emit_mul( func, r, 0 ); /* xmm[r] = xmm[r] * xmm[0] */
}
/* do all stores of the temp regs */
FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
int r = chan_index + 1;
STORE( func, *inst, r, 0, chan_index ); /* store xmm[r] */
}
break;
@ -2833,6 +2839,7 @@ check_soa_dependencies(const struct tgsi_full_instruction *inst)
switch (inst->Instruction.Opcode) {
case TGSI_OPCODE_ADD:
case TGSI_OPCODE_MOV:
case TGSI_OPCODE_MUL:
case TGSI_OPCODE_XPD:
/* OK - these opcodes correctly handle SOA dependencies */
break;