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gallivm: Use saturating fpto*i conversions

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Matches what vkd3d-proton expects and how other hardware (AMD) behaves.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27019>
This commit is contained in:
Konstantin Seurer
2024-01-11 10:45:14 +01:00
committed by Marge Bot
parent 6d88c1bb6c
commit 6d98142eda
1 changed files with 16 additions and 33 deletions
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49
src/gallium/auxiliary/gallivm/lp_bld_nir.c
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@@ -644,43 +644,26 @@ do_alu_action(struct lp_build_nir_context *bld_base,
bld_base->dbl_bld.vec_type, "");
break;
case nir_op_f2i8:
result = LLVMBuildFPToSI(builder,
src[0],
bld_base->uint8_bld.vec_type, "");
break;
case nir_op_f2i16:
result = LLVMBuildFPToSI(builder,
src[0],
bld_base->uint16_bld.vec_type, "");
break;
case nir_op_f2i32:
result = LLVMBuildFPToSI(builder, src[0], bld_base->base.int_vec_type, "");
break;
case nir_op_f2u8:
result = LLVMBuildFPToUI(builder,
src[0],
bld_base->uint8_bld.vec_type, "");
break;
case nir_op_f2u16:
result = LLVMBuildFPToUI(builder,
src[0],
bld_base->uint16_bld.vec_type, "");
break;
case nir_op_f2u32:
result = LLVMBuildFPToUI(builder,
src[0],
bld_base->base.int_vec_type, "");
break;
case nir_op_f2i64:
result = LLVMBuildFPToSI(builder,
src[0],
bld_base->int64_bld.vec_type, "");
break;
case nir_op_f2u64:
result = LLVMBuildFPToUI(builder,
src[0],
bld_base->uint64_bld.vec_type, "");
case nir_op_f2u8:
case nir_op_f2u16:
case nir_op_f2u32:
case nir_op_f2u64: {
nir_alu_type dst_type = nir_op_infos[instr->op].output_type;
bool is_unsigned = nir_alu_type_get_base_type(dst_type) == nir_type_uint;
LLVMTypeRef int_type = get_int_bld(bld_base, is_unsigned, nir_alu_type_get_type_size(dst_type))->vec_type;
char name[64];
char tmp[64];
char intrinsic[64];
snprintf(name, sizeof(name), "llvm.fpto%ci.sat", is_unsigned ? 'u' : 's');
lp_format_intrinsic(tmp, 64, name, int_type);
lp_format_intrinsic(intrinsic, 64, tmp, LLVMTypeOf(src[0]));
result = lp_build_intrinsic_unary(builder, intrinsic, int_type, src[0]);
break;
}
case nir_op_fabs:
result = lp_build_abs(get_flt_bld(bld_base, src_bit_size[0]), src[0]);
break;