OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nv50: preallocate TEMPs written first time in a subroutine

Browse Source 
Otherwise we risk overwriting them with temporary GPRs if
they're not used immediately after the CALL.
This commit is contained in:
Christoph Bumiller
2010-01-07 21:17:13 +01:00
parent a009fa4305
commit 7fc5fcada5
1 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/gallium/drivers/nv50/nv50_program.c
View File

@@ -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 = &reg[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;
}
}
}