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| author | Zoltan Varga <vargaz@gmail.com> | 2013-03-26 07:31:07 +0400 |
|---|---|---|
| committer | Zoltan Varga <vargaz@gmail.com> | 2013-03-26 07:31:07 +0400 |
| commit | aa8abd1f58edd74206c26094543b0da55a941db3 (patch) | |
| tree | 2e13dfc6ff550583cea0721b46cd40680fe893b1 | |
| parent | bd4c5c3651b063860d2e147fff328bcc2fef6083 (diff) | |
Don't emulate idiv.un/irem.un on ARM in cases where it can be optimized away.
| -rw-r--r-- | mono/mini/method-to-ir.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mono/mini/method-to-ir.c b/mono/mini/method-to-ir.c index 38451d36a4d..e3d4c2c206f 100644 --- a/mono/mini/method-to-ir.c +++ b/mono/mini/method-to-ir.c @@ -8411,6 +8411,12 @@ mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_b int imm_opcode; imm_opcode = mono_op_to_op_imm_noemul (ins->opcode); +#if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV) + /* Keep emulated opcodes which are optimized away later */ + if ((ins->opcode == OP_IREM_UN || ins->opcode == OP_IDIV_UN_IMM) && (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP)) && sp [1]->opcode == OP_ICONST && mono_is_power_of_two (sp [1]->inst_c0) >= 0) { + imm_opcode = mono_op_to_op_imm (ins->opcode); + } +#endif if (imm_opcode != -1) { ins->opcode = imm_opcode; if (sp [1]->opcode == OP_I8CONST) { |