diff options
| author | Tom Stellard <[email protected]> | 2012-07-31 20:05:54 +0000 |
|---|---|---|
| committer | Tom Stellard <[email protected]> | 2012-07-31 20:19:21 +0000 |
| commit | a488fdd3d97a6e9fa1ff8b8d22193551391170d3 (patch) | |
| tree | f2ab8842e1f80620200ba78832ef0197eca353a7 /src/gallium/drivers/radeon | |
| parent | be468742811364f55a81d7f49164a60291bdd5ff (diff) | |
radeon/llvm: Add pseudo-support for 64-bit immediate types on SI
SI does not support 64-bit immediates natively, but llvm will generate
i64 immediates when indexing loads and stores (since SI has 64-bit
pointers). The i64 indices will always be small enough to fit into
32-bits (i.e. the high 32 bits will always be all zeros), so we can
treat these index values as 32-bits.
Diffstat (limited to 'src/gallium/drivers/radeon')
| -rw-r--r-- | src/gallium/drivers/radeon/SIInstrInfo.td | 11 | ||||
| -rw-r--r-- | src/gallium/drivers/radeon/SIInstructions.td | 12 |
2 files changed, 23 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeon/SIInstrInfo.td b/src/gallium/drivers/radeon/SIInstrInfo.td index 36496f0cc73..81df55d135e 100644 --- a/src/gallium/drivers/radeon/SIInstrInfo.td +++ b/src/gallium/drivers/radeon/SIInstrInfo.td @@ -71,6 +71,11 @@ def IMM12bit : ImmLeaf < [{return (int16_t)Imm >= 0 && (int16_t)Imm <= 0xfff;}] >; +def IMM32bitIn64bit : ImmLeaf < + i64, + [{return isInt<32>(Imm);}] +>; + class GPR4Align <RegisterClass rc> : Operand <vAny> { let EncoderMethod = "GPR4AlignEncode"; let MIOperandInfo = (ops rc:$reg); @@ -85,6 +90,12 @@ def i32Literal : Operand <i32> { let EncoderMethod = "i32LiteralEncode"; } +// i64Literal uses the same encoder method as i32 literal, because an +// i64Literal is really a i32 literal with the top 32-bits all set to zero. +def i64Literal : Operand <i64> { + let EncoderMethod = "i32LiteralEncode"; +} + def SMRDmemrr : Operand<iPTR> { let MIOperandInfo = (ops SReg_64, SReg_32); let EncoderMethod = "GPR2AlignEncode"; diff --git a/src/gallium/drivers/radeon/SIInstructions.td b/src/gallium/drivers/radeon/SIInstructions.td index 42bb449f2ee..94748b67259 100644 --- a/src/gallium/drivers/radeon/SIInstructions.td +++ b/src/gallium/drivers/radeon/SIInstructions.td @@ -884,6 +884,18 @@ def S_MOV_IMM_I32 : SOP1 < [(set SReg_32:$dst, (imm:$src0))] >; +// i64 immediates aren't really supported in hardware, but LLVM will use the i64 +// type for indices on load and store instructions. The pattern for +// S_MOV_IMM_I64 will only match i64 immediates that can fit into 32-bits, +// which the hardware can handle. +def S_MOV_IMM_I64 : SOP1 < + 0x3, + (outs SReg_64:$dst), + (ins i64Literal:$src0), + "S_MOV_IMM_I64 $dst, $src0", + [(set SReg_64:$dst, (IMM32bitIn64bit:$src0))] +>; + let isCodeGenOnly = 1, isPseudo = 1 in { def SET_M0 : InstSI < |