diff options
| author | Christoph Bumiller <[email protected]> | 2010-01-07 21:17:13 +0100 |
|---|---|---|
| committer | Christoph Bumiller <[email protected]> | 2010-01-07 21:19:58 +0100 |
| commit | 7fc5fcada5600b401d23a29a4a3d1a09e3492d1c (patch) | |
| tree | 5d756a64273c123bc716adc4dfefa6b4bbfd0247 /src/gallium/drivers/nv50 | |
| parent | a009fa430597d6c31b623a3989e95e0812c495e9 (diff) | |
nv50: preallocate TEMPs written first time in a subroutine
Otherwise we risk overwriting them with temporary GPRs if
they're not used immediately after the CALL.
Diffstat (limited to 'src/gallium/drivers/nv50')
| -rw-r--r-- | src/gallium/drivers/nv50/nv50_program.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/gallium/drivers/nv50/nv50_program.c b/src/gallium/drivers/nv50/nv50_program.c index b1bac447f22..53f9f0adf31 100644 --- a/src/gallium/drivers/nv50/nv50_program.c +++ b/src/gallium/drivers/nv50/nv50_program.c @@ -2911,7 +2911,7 @@ nv50_program_tx_insn(struct nv50_pc *pc, static void prep_inspect_insn(struct nv50_pc *pc, const struct tgsi_full_instruction *insn) { - struct nv50_reg *reg = NULL; + struct nv50_reg *r, *reg = NULL; const struct tgsi_full_src_register *src; const struct tgsi_dst_register *dst; unsigned i, c, k, mask; @@ -2957,7 +2957,15 @@ prep_inspect_insn(struct nv50_pc *pc, const struct tgsi_full_instruction *insn) continue; k = tgsi_util_get_full_src_register_swizzle(src, c); - reg[src->Register.Index * 4 + k].acc = pc->insn_nr; + r = ®[src->Register.Index * 4 + k]; + + /* If used before written, pre-allocate the reg, + * lest we overwrite results from a subroutine. + */ + if (!r->acc && r->type == P_TEMP) + alloc_reg(pc, r); + + r->acc = pc->insn_nr; } } } |