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aco: allow 64-bit literals if they can be sign/zero-extended from 32-bit 

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7798>
This commit is contained in:
Rhys Perry 2020-11-30 14:46:54 +00:00 committed by Marge Bot
parent 24ee0f55f2
commit b10de4c1d8
1 changed files with 8 additions and 3 deletions
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11
src/amd/compiler/aco_ir.h
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@ -421,7 +421,7 @@ public:
constexpr Operand()
: reg_(PhysReg{128}), isTemp_(false), isFixed_(true), isConstant_(false),
isKill_(false), isUndef_(true), isFirstKill_(false), constSize(0),
isLateKill_(false), is16bit_(false), is24bit_(false) {}
isLateKill_(false), is16bit_(false), is24bit_(false), signext(false) {}
explicit Operand(Temp r) noexcept
{
@ -538,8 +538,10 @@ public:
data_.i = 0xc0800000;
setFixed(PhysReg{247});
} else { /* Literal Constant: we don't know if it is a long or double.*/
isConstant_ = 0;
assert(false && "attempt to create a 64-bit literal constant");
signext = v >> 63;
data_.i = v & 0xffffffffu;
setFixed(PhysReg{255});
assert(constantValue64() == v && "attempt to create a unrepresentable 64-bit literal constant");
}
};
explicit Operand(RegClass type) noexcept
@ -667,6 +669,8 @@ public:
return 0x4010000000000000;
case 247:
return 0xC010000000000000;
case 255:
return (signext && (data_.i & 0x80000000u) ? 0xffffffff00000000ull : 0ull) | data_.i;
}
unreachable("invalid register for 64-bit constant");
} else {
@ -785,6 +789,7 @@ private:
uint8_t isLateKill_:1;
uint8_t is16bit_:1;
uint8_t is24bit_:1;
uint8_t signext:1;
};
/* can't initialize bit-fields in c++11, so work around using a union */
uint16_t control_ = 0;