diff options
Diffstat (limited to 'llvm/lib/Target/R600/AMDGPUInstrInfo.td')
| -rw-r--r-- | llvm/lib/Target/R600/AMDGPUInstrInfo.td | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/llvm/lib/Target/R600/AMDGPUInstrInfo.td b/llvm/lib/Target/R600/AMDGPUInstrInfo.td index 3d70791bd5a..037767d1087 100644 --- a/llvm/lib/Target/R600/AMDGPUInstrInfo.td +++ b/llvm/lib/Target/R600/AMDGPUInstrInfo.td @@ -58,9 +58,12 @@ def AMDGPUrsq_clamped : SDNode<"AMDGPUISD::RSQ_CLAMPED", SDTFPUnaryOp>; def AMDGPUldexp : SDNode<"AMDGPUISD::LDEXP", AMDGPULdExpOp>; -// out = max(a, b) a and b are floats -def AMDGPUfmax : SDNode<"AMDGPUISD::FMAX", SDTFPBinOp, - [SDNPCommutative, SDNPAssociative] +// out = max(a, b) a and b are floats, where a nan comparison fails. +// This is not commutative because this gives the second operand: +// x < nan ? x : nan -> nan +// nan < x ? nan : x -> x +def AMDGPUfmax_legacy : SDNode<"AMDGPUISD::FMAX_LEGACY", SDTFPBinOp, + [SDNPAssociative] >; def AMDGPUclamp : SDNode<"AMDGPUISD::CLAMP", SDTFPTernaryOp, []>; @@ -76,9 +79,9 @@ def AMDGPUumax : SDNode<"AMDGPUISD::UMAX", SDTIntBinOp, [SDNPCommutative, SDNPAssociative] >; -// out = min(a, b) a and b are floats -def AMDGPUfmin : SDNode<"AMDGPUISD::FMIN", SDTFPBinOp, - [SDNPCommutative, SDNPAssociative] +// out = min(a, b) a and b are floats, where a nan comparison fails. +def AMDGPUfmin_legacy : SDNode<"AMDGPUISD::FMIN_LEGACY", SDTFPBinOp, + [SDNPAssociative] >; // out = min(a, b) a snd b are signed ints @@ -137,7 +140,7 @@ def AMDGPUregister_store : SDNode<"AMDGPUISD::REGISTER_STORE", // MSKOR(dst, mask, src) MEM[dst] = ((MEM[dst] & ~mask) | src) // // src0: vec4(src, 0, 0, mask) -// src1: dst - rat offset (aka pointer) in dwords +// src1: dst - rat offset (aka pointer) in dwords def AMDGPUstore_mskor : SDNode<"AMDGPUISD::STORE_MSKOR", SDTypeProfile<0, 2, []>, [SDNPHasChain, SDNPMayStore, SDNPMemOperand]>; |
