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[ARM64_DYNAREC] Some small improvment to a few shift opcode, to use flagless jump when possible
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This commit is contained in:
ptitSeb 2024-10-20 11:23:55 +02:00
parent 4e10cd654f
commit 80c346060f
2 changed files with 60 additions and 102 deletions
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114
src/dynarec/arm64/dynarec_arm64_00.c
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@ -2619,8 +2619,8 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
MAYSETFLAGS();
UFLAG_IF {
UFLAG_DF(x2, d_none);
TSTw_mask(xRCX, 0, 0b00100); //mask=0x00000001f
B_NEXT(cEQ);
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
CBZw_NEXT(x2);
}
ANDw_mask(x2, xRCX, 0, 0b00010); //mask=0x000000007
MOV32w(x4, 8);
@ -2631,8 +2631,8 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
EBBACK;
UFLAG_IF { // calculate flags directly
IFX(X_OF) {
CMPSw_U12(x2, 7);
B_MARK(cNE);
SUBw_U12(x3, x2, 7);
CBNZw_MARK(x3);
EORxw_REG_LSR(x3, ed, ed, 7);
BFIw(xFlags, x3, F_OF, 1);
MARK;
@ -2649,8 +2649,8 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
MAYSETFLAGS();
UFLAG_IF {
UFLAG_DF(x2, d_none);
TSTw_mask(xRCX, 0, 0b00100); //mask=0x00000001f
B_NEXT(cEQ);
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
CBZw_NEXT(x2);
}
ANDw_mask(x2, xRCX, 0, 0b00010); //mask=0x000000007
GETEB(x1, 0);
@ -2659,8 +2659,8 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
EBBACK;
UFLAG_IF { // calculate flags directly
IFX(X_OF) {
CMPSw_U12(x2, 1);
B_MARK(cNE);
SUBw_U12(x3, x2, 1);
CBNZw_MARK(x3);
LSRxw(x2, ed, 6); // x2 = d>>6
EORw_REG_LSR(x2, x2, x2, 1); // x2 = ((d>>6) ^ ((d>>6)>>1))
BFIw(xFlags, x2, F_OF, 1);
@ -2678,7 +2678,7 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
SETFLAGS(X_OF|X_CF, SF_SET_DF);
ANDSw_mask(x2, xRCX, 0, 0b00100);
ANDw_mask(x2, xRCX, 0, 0b00100);
GETEB(x1, 0);
CALL_(rcl8, x1, x3);
EBBACK;
@ -2690,7 +2690,7 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
SETFLAGS(X_OF|X_CF, SF_SET_DF);
ANDSw_mask(x2, xRCX, 0, 0b00100);
ANDw_mask(x2, xRCX, 0, 0b00100);
GETEB(x1, 0);
CALL_(rcr8, x1, x3);
EBBACK;
@ -2701,11 +2701,9 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_ALL, SF_SET_PENDING); // some flags are left undefined
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
ANDSw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
B_NEXT(cEQ);
} else {
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
UFLAG_IF {
CBZw_NEXT(x2);
}
GETEB(x1, 0);
emit_shl8(dyn, ninst, x1, x2, x5, x4);
@ -2716,11 +2714,9 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_ALL, SF_SET_PENDING); // some flags are left undefined
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
ANDSw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
B_NEXT(cEQ);
} else {
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
UFLAG_IF {
CBZw_NEXT(x2);
}
GETEB(x1, 0);
emit_shr8(dyn, ninst, x1, x2, x5, x4);
@ -2731,11 +2727,9 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_ALL, SF_SET_PENDING); // some flags are left undefined
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
ANDSw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
B_NEXT(cEQ);
} else {
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
UFLAG_IF {
CBZw_NEXT(x2);
}
GETSEB(x1, 0);
emit_sar8(dyn, ninst, x1, x2, x5, x4);
@ -2751,34 +2745,28 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_OF|X_CF, SF_SUBSET);
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
UFLAG_DF(x2, d_none);
if(rex.w) {
ANDSx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
} else {
if(rex.w) {
ANDx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
UFLAG_IF {
UFLAG_DF(x2, d_none);
}
MOV64xw(x4, (rex.w?64:32));
SUBx_REG(x3, x4, x3);
GETED(0);
UFLAG_IF {
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x3);
}
RORxw_REG(ed, ed, x3);
WBACK;
UFLAG_IF { // calculate flags directly
IFX(X_OF) {
CMPSw_U12(x3, rex.w?63:31);
B_MARK(cNE);
ADDxw_REG_LSR(x1, ed, ed, rex.w?63:31);
SUBw_U12(x3, x3, rex.w?63:31);
CBNZw_MARK(x3);
EORxw_REG_LSR(x1, ed, ed, rex.w?63:31);
BFIw(xFlags, x1, F_OF, 1);
MARK;
}
@ -2792,31 +2780,25 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_OF|X_CF, SF_SUBSET);
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
UFLAG_DF(x2, d_none);
if(rex.w) {
ANDSx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
} else {
if(rex.w) {
ANDx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
UFLAG_IF {
UFLAG_DF(x2, d_none);
}
GETED(0);
UFLAG_IF {
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x3);
}
RORxw_REG(ed, ed, x3);
WBACK;
UFLAG_IF { // calculate flags directly
IFX(X_OF) {
CMPSw_U12(x3, 1);
B_MARK(cNE);
SUBw_U12(x2, x3, 1);
CBNZw_MARK(x2);
LSRxw(x2, ed, rex.w?62:30); // x2 = d>>30
EORw_REG_LSR(x2, x2, x2, 1); // x2 = ((d>>30) ^ ((d>>30)>>1))
BFIw(xFlags, x2, F_OF, 1);
@ -2835,13 +2817,13 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
if(rex.w) {
ANDSx_mask(x2, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
ANDx_mask(x2, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
}
GETEDW(x4, x1, 0);
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x2);
CALL_(rex.w?((void*)rcl64):((void*)rcl32), ed, x4);
WBACK;
break;
@ -2853,13 +2835,13 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
if(rex.w) {
ANDSx_mask(x2, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
ANDx_mask(x2, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
ANDw_mask(x2, xRCX, 0, 0b00100); //mask=0x00000001f
}
GETEDW(x4, x1, 0);
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x2);
CALL_(rex.w?((void*)rcr64):((void*)rcr32), ed, x4);
WBACK;
break;
@ -2869,23 +2851,15 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_ALL, SF_SET_PENDING); // some flags are left undefined
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
if(rex.w) {
ANDSx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
} else {
if(rex.w) {
ANDx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
}
GETED(0);
UFLAG_IF {
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x3);
}
emit_shl32(dyn, ninst, rex, ed, x3, x5, x4);
WBACK;
@ -2895,23 +2869,15 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_ALL, SF_SET_PENDING); // some flags are left undefined
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
if(rex.w) {
ANDSx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
} else {
if(rex.w) {
ANDx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
}
GETED(0);
UFLAG_IF {
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x3);
}
emit_shr32(dyn, ninst, rex, ed, x3, x5, x4);
WBACK;
@ -2921,23 +2887,15 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
SETFLAGS(X_ALL, SF_PENDING);
if(box64_dynarec_safeflags>1)
MAYSETFLAGS();
UFLAG_IF {
if(rex.w) {
ANDSx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDSw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
} else {
if(rex.w) {
ANDx_mask(x3, xRCX, 1, 0, 0b00101); //mask=0x000000000000003f
} else {
ANDw_mask(x3, xRCX, 0, 0b00100); //mask=0x00000001f
}
}
GETED(0);
UFLAG_IF {
if(!rex.w && !rex.is32bits && MODREG) {MOVw_REG(ed, ed);}
B_NEXT(cEQ);
CBZw_NEXT(x3);
}
UFLAG_OP12(ed, x3);
ASRxw_REG(ed, ed, x3);

18
src/dynarec/arm64/dynarec_arm64_emit_shift.c
View File

@ -1195,7 +1195,7 @@ void emit_shrd32c(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, uint
BFXILxw(xFlags, s1, c-1, 1); // set CF
}
IFX(X_OF) {
if(c==1) {
if((c==1) || box64_dynarec_test) {
LSRxw(s4, s1, rex.w?63:31);
BFIw(xFlags, s4, F_OF, 1); // store sign for later use
}
@ -1331,8 +1331,8 @@ void emit_shrd32(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, int s
}
}
IFX(X_OF) {
SUBw_U12(s5, s5, 1);
CBNZw(s5, 4+2*4); //flagless jump
SUBw_U12(s3, s5, 1);
CBNZw(s3, 4+2*4); //flagless jump
UBFXx(s3, s1, rex.w?63:31, 1);
EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed
}
@ -1384,8 +1384,8 @@ void emit_shld32(dynarec_arm_t* dyn, int ninst, rex_t rex, int s1, int s2, int s
}
}
IFX(X_OF) {
SUBw_U12(s5, s5, 1);
CBNZw(s5, 4+2*4); //flagless jump
SUBw_U12(s3, s5, 1);
CBNZw(s3, 4+2*4); //flagless jump
UBFXx(s3, s1, rex.w?63:31, 1);
EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed
}
@ -1465,8 +1465,8 @@ void emit_shrd16(dynarec_arm_t* dyn, int ninst, int s1, int s2, int s5, int s3,
}
COMP_ZFSF(s1, 16)
IFX(X_OF) {
SUBw_U12(s5, s5, 1);
CBNZw(s5, 4+2*4);
SUBw_U12(s3, s5, 1);
CBNZw(s3, 4+2*4);
UBFXw(s3, s1, 15, 1);
EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed
}
@ -1556,8 +1556,8 @@ void emit_shld16(dynarec_arm_t* dyn, int ninst, int s1, int s2, int s5, int s3,
}
COMP_ZFSF(s1, 16)
IFX(X_OF) {
SUBw_U12(s5, s5, 1);
CBNZw(s5, 4+2*4);
SUBw_U12(s3, s5, 1);
CBNZw(s3, 4+2*4);
UBFXw(s3, s1, 15, 1);
EORw_REG_LSL(xFlags, xFlags, s3, F_OF); // OF is set if sign changed
}