diff options
| author | Wim Taymans <wtaymans@redhat.com> | 2014-09-19 18:07:10 +0200 |
|---|---|---|
| committer | Wim Taymans <wtaymans@redhat.com> | 2014-09-19 23:05:48 +0200 |
| commit | a62eefc1dc716046d99aacec208cfdfe42dadb34 (patch) | |
| tree | f2727cd46128bfcd97161d529cdbe0c249c47af6 | |
| parent | c368c336b6e618c0edead4023401033d94847e9e (diff) | |
compiler: keep track of temp variables that contain param/const
Keep track of what const/param is loaded into a temp variable. We can
then see if the const is already loaded in a variable and simply reuse
it instead of using a new temp. We must also make sure we load constants
of different size in different temp variables.
| -rw-r--r-- | orc/orccompiler.c | 24 | ||||
| -rw-r--r-- | orc/orcvariable.h | 3 |
2 files changed, 22 insertions, 5 deletions
diff --git a/orc/orccompiler.c b/orc/orccompiler.c index 1b403f5..12c6c11 100644 --- a/orc/orccompiler.c +++ b/orc/orccompiler.c @@ -580,10 +580,7 @@ orc_compiler_rewrite_insns (OrcCompiler *compiler) } else if (var->vartype == ORC_VAR_TYPE_CONST || var->vartype == ORC_VAR_TYPE_PARAM) { OrcInstruction *cinsn; - int multiplier; - - cinsn = compiler->insns + compiler->n_insns; - compiler->n_insns++; + int l, multiplier, loaded; multiplier = 1; if (insn.flags & ORC_INSTRUCTION_FLAG_X2) { @@ -593,6 +590,22 @@ orc_compiler_rewrite_insns (OrcCompiler *compiler) multiplier = 4; } + loaded = -1; + for(l=0;l<ORC_N_COMPILER_VARIABLES;l++){ + if (compiler->vars[l].name == NULL) continue; + if (!compiler->vars[l].has_parameter) continue; + if (compiler->vars[l].parameter != insn.src_args[i]) continue; + if (compiler->vars[l].size != opcode->src_size[i] * multiplier) continue; + loaded = l; + break; + } + if (loaded != -1) { + insn.src_args[i] = loaded; + continue; + } + cinsn = compiler->insns + compiler->n_insns; + compiler->n_insns++; + cinsn->flags = insn.flags; cinsn->flags |= ORC_INSN_FLAG_ADDED; cinsn->opcode = get_loadp_opcode_for_size (opcode->src_size[i]); @@ -602,9 +615,10 @@ orc_compiler_rewrite_insns (OrcCompiler *compiler) compiler->vars[cinsn->dest_args[0]].flags |= ORC_VAR_FLAG_VOLATILE_WORKAROUND; } + compiler->vars[cinsn->dest_args[0]].has_parameter = TRUE; + compiler->vars[cinsn->dest_args[0]].parameter = insn.src_args[i]; cinsn->src_args[0] = insn.src_args[i]; insn.src_args[i] = cinsn->dest_args[0]; - } } } diff --git a/orc/orcvariable.h b/orc/orcvariable.h index 28a7bb4..78226df 100644 --- a/orc/orcvariable.h +++ b/orc/orcvariable.h @@ -70,6 +70,9 @@ struct _OrcVariable { int update_type; int need_offset_reg; unsigned int flags; + + int has_parameter; + int parameter; }; ORC_END_DECLS |