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radeonsi: make use of ac_build_fdiv()

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And move the comment to amd/common.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset
2017-12-12 18:10:20 +01:00
parent 88522e2bcd
commit d43e72fd8c
2 changed files with 2 additions and 7 deletions
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1
src/amd/common/ac_llvm_build.c
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@@ -439,6 +439,7 @@ ac_build_fdiv(struct ac_llvm_context *ctx,
{
LLVMValueRef ret = LLVMBuildFDiv(ctx->builder, num, den, "");
/* Use v_rcp_f32 instead of precise division. */
if (!LLVMIsConstant(ret))
LLVMSetMetadata(ret, ctx->fpmath_md_kind, ctx->fpmath_md_2p5_ulp);
return ret;

8
src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
View File

@@ -668,13 +668,7 @@ static void emit_fdiv(const struct lp_build_tgsi_action *action,
struct si_shader_context *ctx = si_shader_context(bld_base);
emit_data->output[emit_data->chan] =
LLVMBuildFDiv(ctx->ac.builder,
emit_data->args[0], emit_data->args[1], "");
/* Use v_rcp_f32 instead of precise division. */
if (!LLVMIsConstant(emit_data->output[emit_data->chan]))
LLVMSetMetadata(emit_data->output[emit_data->chan],
ctx->fpmath_md_kind, ctx->fpmath_md_2p5_ulp);
ac_build_fdiv(&ctx->ac, emit_data->args[0], emit_data->args[1]);
}
/* 1/sqrt is translated to rsq for f32 if fp32 denormals are not enabled in