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Bug 1299376 - IonMonkey: MIPS64: Fix load unsigned 32-bit immediate in ma_li(ImmWord). r=arai

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---
 js/src/jit/mips64/MacroAssembler-mips64.cpp | 36 ++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 14 deletions(-)
This commit is contained in:
Heiher 2016-09-01 13:52:21 +08:00
parent 81eb242627
commit 9c6578dffe
1 changed files with 22 additions and 14 deletions
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36
js/src/jit/mips64/MacroAssembler-mips64.cpp
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@ -206,29 +206,37 @@ MacroAssemblerMIPS64::ma_li(Register dest, CodeOffset* label)
void
MacroAssemblerMIPS64::ma_li(Register dest, ImmWord imm)
{
if ((int64_t)imm.value >= INT16_MIN && (int64_t)imm.value <= INT16_MAX) {
as_addiu(dest, zero, imm.value);
int64_t value = imm.value;
if (value >= INT16_MIN && value <= INT16_MAX) {
as_addiu(dest, zero, value);
} else if (imm.value <= UINT16_MAX) {
as_ori(dest, zero, Imm16::Lower(Imm32(imm.value)).encode());
} else if (0 == (imm.value & 0xffff) && 0 == (imm.value >> 32)) {
as_lui(dest, Imm16::Upper(Imm32(imm.value)).encode());
as_ori(dest, zero, Imm16::Lower(Imm32(value)).encode());
} else if (value >= INT32_MIN && value <= INT32_MAX) {
as_lui(dest, Imm16::Upper(Imm32(value)).encode());
if (value & 0xffff)
as_ori(dest, dest, Imm16::Lower(Imm32(value)).encode());
} else if (imm.value <= UINT32_MAX) {
as_lui(dest, Imm16::Upper(Imm32(imm.value)).encode());
as_ori(dest, dest, Imm16::Lower(Imm32(imm.value)).encode());
as_lui(dest, Imm16::Upper(Imm32(value)).encode());
if (value & 0xffff)
as_ori(dest, dest, Imm16::Lower(Imm32(value)).encode());
as_dinsu(dest, zero, 32, 32);
} else {
uint64_t high = imm.value >> 32;
if (imm.value >> 48) {
as_lui(dest, Imm16::Upper(Imm32(imm.value >> 32)).encode());
if ((imm.value >> 32) & 0xffff)
as_ori(dest, dest, Imm16::Lower(Imm32(imm.value >> 32)).encode());
as_lui(dest, Imm16::Upper(Imm32(high)).encode());
if (high & 0xffff)
as_ori(dest, dest, Imm16::Lower(Imm32(high)).encode());
as_dsll(dest, dest, 16);
} else {
as_lui(dest, Imm16::Lower(Imm32(imm.value >> 32)).encode());
as_lui(dest, Imm16::Lower(Imm32(high)).encode());
}
if ((imm.value >> 16) & 0xffff)
as_ori(dest, dest, Imm16::Upper(Imm32(imm.value)).encode());
as_ori(dest, dest, Imm16::Upper(Imm32(value)).encode());
as_dsll(dest, dest, 16);
if (imm.value & 0xffff)
as_ori(dest, dest, Imm16::Lower(Imm32(imm.value)).encode());
if (value & 0xffff)
as_ori(dest, dest, Imm16::Lower(Imm32(value)).encode());
}
}