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shader: allow reverse left shifts to use shared SDWA partial writes

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nmzik
2026-10-14 05:20:23 +02:00
parent 26d326d1b0
commit 280b87adec
3 changed files with 71 additions and 3 deletions
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src/graphics/shader/recompiler/frontend/decode/VectorAluOps.cpp
+1 -3
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@@ -17,7 +17,6 @@ enum class Vop2SdwaProfile {
IntegerFullDestination,
IntegerPartialDestination,
ReverseRightShift,
ReverseLogicalLeft,
Bitwise,
Count,
};
@@ -48,7 +47,7 @@ constexpr Vop2OpcodeInfo VOP2_OPCODE_LIST[] = {
{0x17u, Opcode::V_ASHR_I32},
{0x18u, Opcode::V_ASHRREV_I32, Vop2SdwaProfile::ReverseRightShift},
{0x19u, Opcode::V_LSHL_B32},
{0x1au, Opcode::V_LSHLREV_B32, Vop2SdwaProfile::ReverseLogicalLeft},
{0x1au, Opcode::V_LSHLREV_B32, Vop2SdwaProfile::IntegerPartialDestination},
{0x1bu, Opcode::V_AND_B32, Vop2SdwaProfile::Bitwise},
{0x1cu, Opcode::V_OR_B32, Vop2SdwaProfile::Bitwise},
{0x1du, Opcode::V_XOR_B32, Vop2SdwaProfile::Bitwise},
@@ -1041,7 +1040,6 @@ constexpr Vop2SdwaRule VOP2_SDWA_RULES[] = {
{SdwaSelFull(), SdwaSelAll(), SdwaSelAll(), false, false},
{SdwaSelAll(), SdwaSelAll(), SdwaSelAll(), true, false},
{SdwaSelFull(), SdwaSelAll(), SdwaSelAll(), false, false},
{SdwaSelFull(), SdwaSelAll(), SdwaSelAll(), false, false},
// Bitwise: WriteRawU32 inserts a byte or word destination like any other partial write.
{SdwaSelAll(), SdwaSelAll(), SdwaSelAll(), true, false},
};