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freedreno/ir3: catch incorrect usage of tmp-dst

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Each get_dst() should have a matching put_dst().  Add a bit of checking
to catch mistakes.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
This commit is contained in:
Rob Clark 2014-09-11 11:41:12 -04:00
parent db1a94b1cc
commit 59ff81663a
1 changed files with 15 additions and 0 deletions
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15
src/gallium/drivers/freedreno/ir3/ir3_compiler.c
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@ -115,6 +115,10 @@ struct ir3_compile_context {
*/
struct tgsi_dst_register tmp_dst;
struct tgsi_src_register *tmp_src;
/* just for catching incorrect use of get_dst()/put_dst():
*/
bool using_tmp_dst;
};
@ -167,6 +171,8 @@ compile_init(struct ir3_compile_context *ctx, struct ir3_shader_variant *so,
ctx->atomic = false;
ctx->frag_pos = NULL;
ctx->frag_face = NULL;
ctx->tmp_src = NULL;
ctx->using_tmp_dst = false;
memset(ctx->frag_coord, 0, sizeof(ctx->frag_coord));
@ -897,6 +903,10 @@ get_dst(struct ir3_compile_context *ctx, struct tgsi_full_instruction *inst)
{
struct tgsi_dst_register *dst = &inst->Dst[0].Register;
unsigned i;
compile_assert(ctx, !ctx->using_tmp_dst);
ctx->using_tmp_dst = true;
for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
struct tgsi_src_register *src = &inst->Src[i].Register;
if ((src->File == dst->File) && (src->Index == dst->Index)) {
@ -919,6 +929,9 @@ static void
put_dst(struct ir3_compile_context *ctx, struct tgsi_full_instruction *inst,
struct tgsi_dst_register *dst)
{
compile_assert(ctx, ctx->using_tmp_dst);
ctx->using_tmp_dst = false;
/* if necessary, add mov back into original dst: */
if (dst != &inst->Dst[0].Register) {
create_mov(ctx, &inst->Dst[0].Register, ctx->tmp_src);
@ -2523,6 +2536,8 @@ compile_instructions(struct ir3_compile_context *ctx)
if (t->fxn) {
t->fxn(t, ctx, inst);
ctx->num_internal_temps = 0;
compile_assert(ctx, !ctx->using_tmp_dst);
} else {
compile_error(ctx, "unknown TGSI opc: %s\n",
tgsi_get_opcode_name(opc));