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ac/llvm: remove the double frcp special handling

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KHR-GL45.gpu_shader_fp64.builtin.mod_* relaxed precision
requirement.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23012>
This commit is contained in:
Qiang Yu 2023-05-15 11:23:06 +08:00 • committed by Marge Bot
parent f094c8acfe
commit 8cc7ad48d5
2 changed files with 2 additions and 11 deletions
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4
src/amd/llvm/ac_llvm_build.c
View file

@ -711,10 +711,6 @@ LLVMValueRef ac_build_fdiv(struct ac_llvm_context *ctx, LLVMValueRef num, LLVMVa
unsigned type_size = ac_get_type_size(LLVMTypeOf(den));
const char *name;
/* For doubles, we need precise division to pass GLCTS. */
if (ctx->float_mode == AC_FLOAT_MODE_DEFAULT_OPENGL && type_size == 8)
return LLVMBuildFDiv(ctx->builder, num, den, "");
if (type_size == 2)
name = "llvm.amdgcn.rcp.f16";
else if (type_size == 4)

9
src/amd/llvm/ac_nir_to_llvm.c
View file

@ -671,13 +671,8 @@ static bool visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
src, 2, 0);
break;
case nir_op_frcp:
/* For doubles, we need precise division to pass GLCTS. */
if (ctx->ac.float_mode == AC_FLOAT_MODE_DEFAULT_OPENGL && ac_get_type_size(def_type) == 8) {
result = LLVMBuildFDiv(ctx->ac.builder, ctx->ac.f64_1, ac_to_float(&ctx->ac, src[0]), "");
} else {
result = emit_intrin_1f_param_scalar(&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,
LLVMConstReal(ac_to_float_type(&ctx->ac, def_type), FLT_MAX));