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aco: flush denormals before fp16 fabs/fneg if needed

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5773>
This commit is contained in:
Rhys Perry
2020-07-02 13:34:57 +01:00
committed by Marge Bot
parent 305cffa22b
commit d14f4faa13
1 changed files with 4 additions and 0 deletions
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src/amd/compiler/aco_instruction_selection.cpp
+4
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@@ -1953,6 +1953,8 @@ void visit_alu_instr(isel_context *ctx, nir_alu_instr *instr)
case nir_op_fneg: {
Temp src = get_alu_src(ctx, instr->src[0]);
if (dst.regClass() == v2b) {
if (ctx->block->fp_mode.must_flush_denorms16_64)
src = bld.vop2(aco_opcode::v_mul_f16, bld.def(v2b), Operand((uint16_t)0x3C00), as_vgpr(ctx, src));
bld.vop2(aco_opcode::v_xor_b32, Definition(dst), Operand(0x8000u), as_vgpr(ctx, src));
} else if (dst.regClass() == v1) {
if (ctx->block->fp_mode.must_flush_denorms32)
@@ -1975,6 +1977,8 @@ void visit_alu_instr(isel_context *ctx, nir_alu_instr *instr)
case nir_op_fabs: {
Temp src = get_alu_src(ctx, instr->src[0]);
if (dst.regClass() == v2b) {
if (ctx->block->fp_mode.must_flush_denorms16_64)
src = bld.vop2(aco_opcode::v_mul_f16, bld.def(v2b), Operand((uint16_t)0x3C00), as_vgpr(ctx, src));
bld.vop2(aco_opcode::v_and_b32, Definition(dst), Operand(0x7FFFu), as_vgpr(ctx, src));
} else if (dst.regClass() == v1) {
if (ctx->block->fp_mode.must_flush_denorms32)