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ac: use llvm.amdgcn.fract intrinsic for nir_op_ffract

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Noticed with a Doom shader.

29077 shaders in 15096 tests
Totals:
SGPRS: 1282125 -> 1282133 (0.00 %)
VGPRS: 908716 -> 908616 (-0.01 %)
Spilled SGPRs: 24811 -> 24779 (-0.13 %)
Code Size: 49048176 -> 48936488 (-0.23 %) bytes
Max Waves: 244232 -> 244226 (-0.00 %)

Totals from affected shaders:
SGPRS: 229584 -> 229592 (0.00 %)
VGPRS: 163268 -> 163168 (-0.06 %)
Spilled SGPRs: 8682 -> 8650 (-0.37 %)
Code Size: 12819572 -> 12707884 (-0.87 %) bytes
Max Waves: 24398 -> 24392 (-0.02 %)

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2019-03-19 23:40:32 +01:00
parent 220c1dce1e
commit f4f0e3a395
1 changed files with 4 additions and 5 deletions
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9
src/amd/common/ac_llvm_build.c
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@ -2155,19 +2155,18 @@ LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0,
char *intr;
if (bitsize == 32) {
intr = "llvm.floor.f32";
intr = "llvm.amdgcn.fract.f32";
type = ctx->f32;
} else {
intr = "llvm.floor.f64";
intr = "llvm.amdgcn.fract.f64";
type = ctx->f64;
}
LLVMValueRef params[] = {
src0,
};
LLVMValueRef floor = ac_build_intrinsic(ctx, intr, type, params, 1,
AC_FUNC_ATTR_READNONE);
return LLVMBuildFSub(ctx->builder, src0, floor, "");
return ac_build_intrinsic(ctx, intr, type, params, 1,
AC_FUNC_ATTR_READNONE);
}
LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0,