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author arbee <rb6502@users.noreply.github.com>2018-05-16 13:35:06 -0400
committer arbee <rb6502@users.noreply.github.com>2018-05-16 13:35:06 -0400
commit523df415fa5c31ff036645a13afdc45fa1b22198 (patch)
tree739fef83eb83b9d8cc07da1cd2c7853faf3be372 /src/devices/cpu
parent59686860c97ca6a7140a61d15972fd3f7f24ae6b (diff)
sh4drc: optimize FPU CMP instructions (nw)
Diffstat (limited to 'src/devices/cpu')
-rw-r--r--src/devices/cpu/sh/sh4.cpp28
1 files changed, 8 insertions, 20 deletions
diff --git a/src/devices/cpu/sh/sh4.cpp b/src/devices/cpu/sh/sh4.cpp
index 0fc6713bfab..d99fb0bbc7b 100644
--- a/src/devices/cpu/sh/sh4.cpp
+++ b/src/devices/cpu/sh/sh4.cpp
@@ -3517,26 +3517,20 @@ bool sh34_base_device::generate_group_15_FDIV(drcuml_block &block, compiler_stat
bool sh34_base_device::generate_group_15_FCMP_EQ(drcuml_block &block, compiler_state &compiler, const opcode_desc *desc, uint16_t opcode, int in_delay_slot, uint32_t ovrpc)
{
- UML_MOV(block, I1, 0);
-
UML_TEST(block, uml::mem(&m_sh2_state->m_fpu_pr), 0);
UML_JMPc(block, COND_Z, compiler.labelnum);
- UML_AND(block, I0, uml::mem(&m_sh2_state->sr), ~SH_T);
UML_FDCMP(block, FPD32(Rm & 14), FPD32(Rn & 14));
- UML_MOVc(block, COND_Z, I1, SH_T);
- UML_OR(block, I0, I0, I1);
- UML_MOV(block, uml::mem(&m_sh2_state->sr), I0);
+ UML_SETc(block, COND_Z, I0);
+ UML_ROLINS(block, uml::mem(&m_sh2_state->sr), I0, T_SHIFT, SH_T);
UML_JMP(block, compiler.labelnum+1);
UML_LABEL(block, compiler.labelnum++); // labelnum:
- UML_AND(block, I0, uml::mem(&m_sh2_state->sr), ~SH_T);
UML_FSCMP(block, FPS32(Rm), FPS32(Rn));
- UML_MOVc(block, COND_Z, I1, SH_T);
- UML_OR(block, I0, I0, I1);
- UML_MOV(block, uml::mem(&m_sh2_state->sr), I0);
+ UML_SETc(block, COND_Z, I0);
+ UML_ROLINS(block, uml::mem(&m_sh2_state->sr), I0, T_SHIFT, SH_T);
UML_LABEL(block, compiler.labelnum++); // labelnum+1:
return true;
@@ -3544,26 +3538,20 @@ bool sh34_base_device::generate_group_15_FCMP_EQ(drcuml_block &block, compiler_s
bool sh34_base_device::generate_group_15_FCMP_GT(drcuml_block &block, compiler_state &compiler, const opcode_desc *desc, uint16_t opcode, int in_delay_slot, uint32_t ovrpc)
{
- UML_MOV(block, I1, 0);
-
UML_TEST(block, uml::mem(&m_sh2_state->m_fpu_pr), 0);
UML_JMPc(block, COND_Z, compiler.labelnum);
- UML_AND(block, I0, uml::mem(&m_sh2_state->sr), ~SH_T);
UML_FDCMP(block, FPD32(Rm & 14), FPD32(Rn & 14));
- UML_MOVc(block, COND_C, I1, SH_T);
- UML_OR(block, I0, I0, I1);
- UML_MOV(block, uml::mem(&m_sh2_state->sr), I0);
+ UML_SETc(block, COND_C, I0);
+ UML_ROLINS(block, uml::mem(&m_sh2_state->sr), I0, T_SHIFT, SH_T);
UML_JMP(block, compiler.labelnum+1);
UML_LABEL(block, compiler.labelnum++); // labelnum:
- UML_AND(block, I0, uml::mem(&m_sh2_state->sr), ~SH_T);
UML_FSCMP(block, FPS32(Rm), FPS32(Rn));
- UML_MOVc(block, COND_C, I1, SH_T);
- UML_OR(block, I0, I0, I1);
- UML_MOV(block, uml::mem(&m_sh2_state->sr), I0);
+ UML_SETc(block, COND_C, I0);
+ UML_ROLINS(block, uml::mem(&m_sh2_state->sr), I0, T_SHIFT, SH_T);
UML_LABEL(block, compiler.labelnum++); // labelnum+1:
return true;