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Unified Diff: src/mips/macro-assembler-mips.cc

Issue 453043002: MIPS: Add support for arch. revision 6 to mips32 port. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressed comments. Created 6 years, 4 months ago
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Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 691592272910e753408bc66c446a515f628cc0f5..f1eaeed281b05bf5eef94e12a9f1fe35d515e776 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -641,7 +641,7 @@ void MacroAssembler::Subu(Register rd, Register rs, const Operand& rt) {
void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) {
if (rt.is_reg()) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson)) {
mult(rs, rt.rm());
mflo(rd);
} else {
@@ -651,7 +651,7 @@ void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) {
// li handles the relocation.
DCHECK(!rs.is(at));
li(at, rt);
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson)) {
mult(rs, at);
mflo(rd);
} else {
@@ -661,6 +661,71 @@ void MacroAssembler::Mul(Register rd, Register rs, const Operand& rt) {
}
+void MacroAssembler::Mul(Register rd_hi, Register rd_lo,
+ Register rs, const Operand& rt) {
+ if (rt.is_reg()) {
+ if (!IsMipsArchVariant(kMips32r6)) {
+ mult(rs, rt.rm());
+ mflo(rd_lo);
+ mfhi(rd_hi);
+ } else {
+ if (rd_lo.is(rs)) {
+ DCHECK(!rd_hi.is(rs));
+ DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm()));
+ muh(rd_hi, rs, rt.rm());
+ mul(rd_lo, rs, rt.rm());
+ } else {
+ DCHECK(!rd_hi.is(rt.rm()) && !rd_lo.is(rt.rm()));
+ mul(rd_lo, rs, rt.rm());
+ muh(rd_hi, rs, rt.rm());
+ }
+ }
+ } else {
+ // li handles the relocation.
+ DCHECK(!rs.is(at));
+ li(at, rt);
+ if (!IsMipsArchVariant(kMips32r6)) {
+ mult(rs, at);
+ mflo(rd_lo);
+ mfhi(rd_hi);
+ } else {
+ if (rd_lo.is(rs)) {
+ DCHECK(!rd_hi.is(rs));
+ DCHECK(!rd_hi.is(at) && !rd_lo.is(at));
+ muh(rd_hi, rs, at);
+ mul(rd_lo, rs, at);
+ } else {
+ DCHECK(!rd_hi.is(at) && !rd_lo.is(at));
+ mul(rd_lo, rs, at);
+ muh(rd_hi, rs, at);
+ }
+ }
+ }
+}
+
+
+void MacroAssembler::Mulh(Register rd, Register rs, const Operand& rt) {
+ if (rt.is_reg()) {
+ if (!IsMipsArchVariant(kMips32r6)) {
+ mult(rs, rt.rm());
+ mfhi(rd);
+ } else {
+ muh(rd, rs, rt.rm());
+ }
+ } else {
+ // li handles the relocation.
+ DCHECK(!rs.is(at));
+ li(at, rt);
+ if (!IsMipsArchVariant(kMips32r6)) {
+ mult(rs, at);
+ mfhi(rd);
+ } else {
+ muh(rd, rs, at);
+ }
+ }
+}
+
+
void MacroAssembler::Mult(Register rs, const Operand& rt) {
if (rt.is_reg()) {
mult(rs, rt.rm());
@@ -697,6 +762,55 @@ void MacroAssembler::Div(Register rs, const Operand& rt) {
}
+void MacroAssembler::Div(Register rem, Register res,
+ Register rs, const Operand& rt) {
+ if (rt.is_reg()) {
+ if (!IsMipsArchVariant(kMips32r6)) {
+ div(rs, rt.rm());
+ mflo(res);
+ mfhi(rem);
+ } else {
+ div(res, rs, rt.rm());
+ mod(rem, rs, rt.rm());
+ }
+ } else {
+ // li handles the relocation.
+ DCHECK(!rs.is(at));
+ li(at, rt);
+ if (!IsMipsArchVariant(kMips32r6)) {
+ div(rs, at);
+ mflo(res);
+ mfhi(rem);
+ } else {
+ div(res, rs, at);
+ mod(rem, rs, at);
+ }
+ }
+}
+
+
+void MacroAssembler::Mod(Register rd, Register rs, const Operand& rt) {
+ if (rt.is_reg()) {
+ if (!IsMipsArchVariant(kMips32r6)) {
+ div(rs, rt.rm());
+ mfhi(rd);
+ } else {
+ mod(rd, rs, rt.rm());
+ }
+ } else {
+ // li handles the relocation.
+ DCHECK(!rs.is(at));
+ li(at, rt);
+ if (!IsMipsArchVariant(kMips32r6)) {
+ div(rs, at);
+ mfhi(rd);
+ } else {
+ mod(rd, rs, at);
+ }
+ }
+}
+
+
void MacroAssembler::Divu(Register rs, const Operand& rt) {
if (rt.is_reg()) {
divu(rs, rt.rm());
@@ -811,7 +925,7 @@ void MacroAssembler::Sltu(Register rd, Register rs, const Operand& rt) {
void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) {
- if (kArchVariant == kMips32r2) {
+ if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) {
if (rt.is_reg()) {
rotrv(rd, rs, rt.rm());
} else {
@@ -837,7 +951,7 @@ void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) {
void MacroAssembler::Pref(int32_t hint, const MemOperand& rs) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson)) {
lw(zero_reg, rs);
} else {
pref(hint, rs);
@@ -1033,7 +1147,7 @@ void MacroAssembler::Ext(Register rt,
DCHECK(pos < 32);
DCHECK(pos + size < 33);
- if (kArchVariant == kMips32r2) {
+ if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) {
ext_(rt, rs, pos, size);
} else {
// Move rs to rt and shift it left then right to get the
@@ -1057,7 +1171,7 @@ void MacroAssembler::Ins(Register rt,
DCHECK(pos + size <= 32);
DCHECK(size != 0);
- if (kArchVariant == kMips32r2) {
+ if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) {
ins_(rt, rs, pos, size);
} else {
DCHECK(!rt.is(t8) && !rs.is(t8));
@@ -1111,8 +1225,8 @@ void MacroAssembler::Cvt_d_uw(FPURegister fd,
// Load 2^31 into f20 as its float representation.
li(at, 0x41E00000);
- mtc1(at, FPURegister::from_code(scratch.code() + 1));
mtc1(zero_reg, scratch);
+ Mthc1(at, scratch);
// Add it to fd.
add_d(fd, fd, scratch);
@@ -1129,10 +1243,10 @@ void MacroAssembler::Trunc_uw_d(FPURegister fd,
void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) {
- if (kArchVariant == kLoongson && fd.is(fs)) {
- mfc1(t8, FPURegister::from_code(fs.code() + 1));
+ if (IsMipsArchVariant(kLoongson) && fd.is(fs)) {
+ Mfhc1(t8, fs);
trunc_w_d(fd, fs);
- mtc1(t8, FPURegister::from_code(fs.code() + 1));
+ Mthc1(t8, fs);
} else {
trunc_w_d(fd, fs);
}
@@ -1140,10 +1254,10 @@ void MacroAssembler::Trunc_w_d(FPURegister fd, FPURegister fs) {
void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) {
- if (kArchVariant == kLoongson && fd.is(fs)) {
- mfc1(t8, FPURegister::from_code(fs.code() + 1));
+ if (IsMipsArchVariant(kLoongson) && fd.is(fs)) {
+ Mfhc1(t8, fs);
round_w_d(fd, fs);
- mtc1(t8, FPURegister::from_code(fs.code() + 1));
+ Mthc1(t8, fs);
} else {
round_w_d(fd, fs);
}
@@ -1151,10 +1265,10 @@ void MacroAssembler::Round_w_d(FPURegister fd, FPURegister fs) {
void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) {
- if (kArchVariant == kLoongson && fd.is(fs)) {
- mfc1(t8, FPURegister::from_code(fs.code() + 1));
+ if (IsMipsArchVariant(kLoongson) && fd.is(fs)) {
+ Mfhc1(t8, fs);
floor_w_d(fd, fs);
- mtc1(t8, FPURegister::from_code(fs.code() + 1));
+ Mthc1(t8, fs);
} else {
floor_w_d(fd, fs);
}
@@ -1162,10 +1276,10 @@ void MacroAssembler::Floor_w_d(FPURegister fd, FPURegister fs) {
void MacroAssembler::Ceil_w_d(FPURegister fd, FPURegister fs) {
- if (kArchVariant == kLoongson && fd.is(fs)) {
- mfc1(t8, FPURegister::from_code(fs.code() + 1));
+ if (IsMipsArchVariant(kLoongson) && fd.is(fs)) {
+ Mfhc1(t8, fs);
ceil_w_d(fd, fs);
- mtc1(t8, FPURegister::from_code(fs.code() + 1));
+ Mthc1(t8, fs);
} else {
ceil_w_d(fd, fs);
}
@@ -1180,8 +1294,8 @@ void MacroAssembler::Trunc_uw_d(FPURegister fd,
// Load 2^31 into scratch as its float representation.
li(at, 0x41E00000);
- mtc1(at, FPURegister::from_code(scratch.code() + 1));
mtc1(zero_reg, scratch);
+ Mthc1(at, scratch);
// Test if scratch > fd.
// If fd < 2^31 we can convert it normally.
Label simple_convert;
@@ -1205,6 +1319,24 @@ void MacroAssembler::Trunc_uw_d(FPURegister fd,
}
+void MacroAssembler::Mthc1(Register rt, FPURegister fs) {
+ if (IsFp64Mode()) {
+ mthc1(rt, fs);
+ } else {
+ mtc1(rt, fs.high());
+ }
+}
+
+
+void MacroAssembler::Mfhc1(Register rt, FPURegister fs) {
+ if (IsFp64Mode()) {
+ mfhc1(rt, fs);
+ } else {
+ mfc1(rt, fs.high());
+ }
+}
+
+
void MacroAssembler::BranchF(Label* target,
Label* nan,
Condition cc,
@@ -1220,49 +1352,103 @@ void MacroAssembler::BranchF(Label* target,
DCHECK(nan || target);
// Check for unordered (NaN) cases.
if (nan) {
- c(UN, D, cmp1, cmp2);
- bc1t(nan);
- }
-
- if (target) {
- // Here NaN cases were either handled by this function or are assumed to
- // have been handled by the caller.
- // Unsigned conditions are treated as their signed counterpart.
- switch (cc) {
- case lt:
- c(OLT, D, cmp1, cmp2);
- bc1t(target);
- break;
- case gt:
- c(ULE, D, cmp1, cmp2);
- bc1f(target);
- break;
- case ge:
- c(ULT, D, cmp1, cmp2);
- bc1f(target);
- break;
- case le:
- c(OLE, D, cmp1, cmp2);
- bc1t(target);
- break;
- case eq:
- c(EQ, D, cmp1, cmp2);
- bc1t(target);
- break;
- case ueq:
- c(UEQ, D, cmp1, cmp2);
- bc1t(target);
- break;
- case ne:
- c(EQ, D, cmp1, cmp2);
- bc1f(target);
- break;
- case nue:
- c(UEQ, D, cmp1, cmp2);
- bc1f(target);
- break;
- default:
- CHECK(0);
+ if (!IsMipsArchVariant(kMips32r6)) {
+ c(UN, D, cmp1, cmp2);
+ bc1t(nan);
+ } else {
+ // Use kDoubleCompareReg for comparison result. It has to be unavailable
+ // to lithium register allocator.
+ DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg));
+ cmp(UN, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1nez(nan, kDoubleCompareReg);
+ }
+ }
+
+ if (!IsMipsArchVariant(kMips32r6)) {
+ if (target) {
+ // Here NaN cases were either handled by this function or are assumed to
+ // have been handled by the caller.
+ switch (cc) {
+ case lt:
+ c(OLT, D, cmp1, cmp2);
+ bc1t(target);
+ break;
+ case gt:
+ c(ULE, D, cmp1, cmp2);
+ bc1f(target);
+ break;
+ case ge:
+ c(ULT, D, cmp1, cmp2);
+ bc1f(target);
+ break;
+ case le:
+ c(OLE, D, cmp1, cmp2);
+ bc1t(target);
+ break;
+ case eq:
+ c(EQ, D, cmp1, cmp2);
+ bc1t(target);
+ break;
+ case ueq:
+ c(UEQ, D, cmp1, cmp2);
+ bc1t(target);
+ break;
+ case ne:
+ c(EQ, D, cmp1, cmp2);
+ bc1f(target);
+ break;
+ case nue:
+ c(UEQ, D, cmp1, cmp2);
+ bc1f(target);
+ break;
+ default:
+ CHECK(0);
+ }
+ }
+ } else {
+ if (target) {
+ // Here NaN cases were either handled by this function or are assumed to
+ // have been handled by the caller.
+ // Unsigned conditions are treated as their signed counterpart.
+ // Use kDoubleCompareReg for comparison result, it is
+ // valid in fp64 (FR = 1) mode which is implied for mips32r6.
+ DCHECK(!cmp1.is(kDoubleCompareReg) && !cmp2.is(kDoubleCompareReg));
+ switch (cc) {
+ case lt:
+ cmp(OLT, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1nez(target, kDoubleCompareReg);
+ break;
+ case gt:
+ cmp(ULE, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1eqz(target, kDoubleCompareReg);
+ break;
+ case ge:
+ cmp(ULT, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1eqz(target, kDoubleCompareReg);
+ break;
+ case le:
+ cmp(OLE, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1nez(target, kDoubleCompareReg);
+ break;
+ case eq:
+ cmp(EQ, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1nez(target, kDoubleCompareReg);
+ break;
+ case ueq:
+ cmp(UEQ, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1nez(target, kDoubleCompareReg);
+ break;
+ case ne:
+ cmp(EQ, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1eqz(target, kDoubleCompareReg);
+ break;
+ case nue:
+ cmp(UEQ, L, kDoubleCompareReg, cmp1, cmp2);
+ bc1eqz(target, kDoubleCompareReg);
+ break;
+ default:
+ CHECK(0);
+ }
}
}
@@ -1297,16 +1483,16 @@ void MacroAssembler::Move(FPURegister dst, double imm) {
// register of FPU register pair.
if (hi != 0) {
li(at, Operand(hi));
- mtc1(at, dst.high());
+ Mthc1(at, dst);
} else {
- mtc1(zero_reg, dst.high());
+ Mthc1(zero_reg, dst);
}
}
}
void MacroAssembler::Movz(Register rd, Register rs, Register rt) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) {
Label done;
Branch(&done, ne, rt, Operand(zero_reg));
mov(rd, rs);
@@ -1318,7 +1504,7 @@ void MacroAssembler::Movz(Register rd, Register rs, Register rt) {
void MacroAssembler::Movn(Register rd, Register rs, Register rt) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson) || IsMipsArchVariant(kMips32r6)) {
Label done;
Branch(&done, eq, rt, Operand(zero_reg));
mov(rd, rs);
@@ -1330,7 +1516,7 @@ void MacroAssembler::Movn(Register rd, Register rs, Register rt) {
void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson)) {
// Tests an FP condition code and then conditionally move rs to rd.
// We do not currently use any FPU cc bit other than bit 0.
DCHECK(cc == 0);
@@ -1356,7 +1542,7 @@ void MacroAssembler::Movt(Register rd, Register rs, uint16_t cc) {
void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson)) {
// Tests an FP condition code and then conditionally move rs to rd.
// We do not currently use any FPU cc bit other than bit 0.
DCHECK(cc == 0);
@@ -1382,7 +1568,7 @@ void MacroAssembler::Movf(Register rd, Register rs, uint16_t cc) {
void MacroAssembler::Clz(Register rd, Register rs) {
- if (kArchVariant == kLoongson) {
+ if (IsMipsArchVariant(kLoongson)) {
DCHECK(!(rd.is(t8) || rd.is(t9)) && !(rs.is(t8) || rs.is(t9)));
Register mask = t8;
Register scratch = t9;
@@ -2244,7 +2430,7 @@ void MacroAssembler::BranchAndLinkShort(int16_t offset, Condition cond,
li(r2, rt);
}
- {
+ if (!IsMipsArchVariant(kMips32r6)) {
BlockTrampolinePoolScope block_trampoline_pool(this);
switch (cond) {
case cc_always:
@@ -2308,7 +2494,88 @@ void MacroAssembler::BranchAndLinkShort(int16_t offset, Condition cond,
default:
UNREACHABLE();
}
+ } else {
+ BlockTrampolinePoolScope block_trampoline_pool(this);
+ switch (cond) {
+ case cc_always:
+ bal(offset);
+ break;
+ case eq:
+ bne(rs, r2, 2);
+ nop();
+ bal(offset);
+ break;
+ case ne:
+ beq(rs, r2, 2);
+ nop();
+ bal(offset);
+ break;
+
+ // Signed comparison.
+ case greater:
+ // rs > rt
+ slt(scratch, r2, rs);
+ beq(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ case greater_equal:
+ // rs >= rt
+ slt(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ case less:
+ // rs < r2
+ slt(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ case less_equal:
+ // rs <= r2
+ slt(scratch, r2, rs);
+ bne(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+
+
+ // Unsigned comparison.
+ case Ugreater:
+ // rs > rt
+ sltu(scratch, r2, rs);
+ beq(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ case Ugreater_equal:
+ // rs >= rt
+ sltu(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ case Uless:
+ // rs < r2
+ sltu(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ case Uless_equal:
+ // rs <= r2
+ sltu(scratch, r2, rs);
+ bne(scratch, zero_reg, 2);
+ nop();
+ bal(offset);
+ break;
+ default:
+ UNREACHABLE();
+ }
}
+
// Emit a nop in the branch delay slot if required.
if (bdslot == PROTECT)
nop();
@@ -2339,7 +2606,7 @@ void MacroAssembler::BranchAndLinkShort(Label* L, Condition cond, Register rs,
li(r2, rt);
}
- {
+ if (!IsMipsArchVariant(kMips32r6)) {
BlockTrampolinePoolScope block_trampoline_pool(this);
switch (cond) {
case cc_always:
@@ -2414,7 +2681,100 @@ void MacroAssembler::BranchAndLinkShort(Label* L, Condition cond, Register rs,
default:
UNREACHABLE();
}
+ } else {
+ BlockTrampolinePoolScope block_trampoline_pool(this);
+ switch (cond) {
+ case cc_always:
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case eq:
+ bne(rs, r2, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case ne:
+ beq(rs, r2, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+
+ // Signed comparison.
+ case greater:
+ // rs > rt
+ slt(scratch, r2, rs);
+ beq(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case greater_equal:
+ // rs >= rt
+ slt(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case less:
+ // rs < r2
+ slt(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case less_equal:
+ // rs <= r2
+ slt(scratch, r2, rs);
+ bne(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+
+
+ // Unsigned comparison.
+ case Ugreater:
+ // rs > rt
+ sltu(scratch, r2, rs);
+ beq(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case Ugreater_equal:
+ // rs >= rt
+ sltu(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case Uless:
+ // rs < r2
+ sltu(scratch, rs, r2);
+ bne(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+ case Uless_equal:
+ // rs <= r2
+ sltu(scratch, r2, rs);
+ bne(scratch, zero_reg, 2);
+ nop();
+ offset = shifted_branch_offset(L, false);
+ bal(offset);
+ break;
+
+ default:
+ UNREACHABLE();
+ }
}
+
// Check that offset could actually hold on an int16_t.
DCHECK(is_int16(offset));
@@ -5748,8 +6108,7 @@ void MacroAssembler::TruncatingDiv(Register result,
DCHECK(!result.is(at));
MultiplierAndShift ms(divisor);
li(at, Operand(ms.multiplier()));
- Mult(dividend, Operand(at));
- mfhi(result);
+ Mulh(result, dividend, Operand(at));
if (divisor > 0 && ms.multiplier() < 0) {
Addu(result, result, Operand(dividend));
}
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