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ac/llvm: fix amdgcn.rcp for v2f16

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Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6284>
This commit is contained in:
Marek Olšák 2020-07-04 16:17:28 -04:00 • committed by Marge Bot
parent 84500eebd7
commit ab614abeef
1 changed files with 31 additions and 2 deletions
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33
src/amd/llvm/ac_nir_to_llvm.c
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@ -216,6 +216,35 @@ static LLVMValueRef emit_intrin_1f_param(struct ac_llvm_context *ctx,
return ac_build_intrinsic(ctx, name, result_type, params, 1, AC_FUNC_ATTR_READNONE);
}
static LLVMValueRef emit_intrin_1f_param_scalar(struct ac_llvm_context *ctx,
const char *intrin,
LLVMTypeRef result_type,
LLVMValueRef src0)
{
if (LLVMGetTypeKind(result_type) != LLVMVectorTypeKind)
return emit_intrin_1f_param(ctx, intrin, result_type, src0);
LLVMTypeRef elem_type = LLVMGetElementType(result_type);
LLVMValueRef ret = LLVMGetUndef(result_type);
/* Scalarize the intrinsic, because vectors are not supported. */
for (unsigned i = 0; i < LLVMGetVectorSize(result_type); i++) {
char name[64], type[64];
LLVMValueRef params[] = {
ac_to_float(ctx, ac_llvm_extract_elem(ctx, src0, i)),
};
ac_build_type_name_for_intr(LLVMTypeOf(params[0]), type, sizeof(type));
ASSERTED const int length = snprintf(name, sizeof(name), "%s.%s", intrin, type);
assert(length < sizeof(name));
ret = LLVMBuildInsertElement(ctx->builder, ret,
ac_build_intrinsic(ctx, name, elem_type, params,
1, AC_FUNC_ATTR_READNONE),
LLVMConstInt(ctx->i32, i, 0), "");
}
return ret;
}
static LLVMValueRef emit_intrin_2f_param(struct ac_llvm_context *ctx,
const char *intrin,
LLVMTypeRef result_type,
@ -706,8 +735,8 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
result = LLVMBuildFDiv(ctx->ac.builder, ctx->ac.f64_1,
ac_to_float(&ctx->ac, src[0]), "");
} else {
result = emit_intrin_1f_param(&ctx->ac, "llvm.amdgcn.rcp",
ac_to_float_type(&ctx->ac, def_type), src[0]);
result = emit_intrin_1f_param_scalar(&ctx->ac, "llvm.amdgcn.rcp",
ac_to_float_type(&ctx->ac, def_type), src[0]);
}
if (ctx->abi->clamp_div_by_zero)
result = ac_build_fmin(&ctx->ac, result,