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ac: use llvm.amdgcn.fmed3 intrinsic for nir_op_fmed3 

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2019-03-25 13:37:46 +01:00
parent 6140ed3d2c
commit d6a07732c9
3 changed files with 36 additions and 8 deletions
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27
src/amd/common/ac_llvm_build.c
View File

@ -2430,6 +2430,33 @@ void ac_build_waitcnt(struct ac_llvm_context *ctx, unsigned simm16)
ctx->voidt, args, 1, 0);
}
LLVMValueRef ac_build_fmed3(struct ac_llvm_context *ctx, LLVMValueRef src0,
LLVMValueRef src1, LLVMValueRef src2,
unsigned bitsize)
{
LLVMTypeRef type;
char *intr;
if (bitsize == 16) {
intr = "llvm.amdgcn.fmed3.f16";
type = ctx->f16;
} else if (bitsize == 32) {
intr = "llvm.amdgcn.fmed3.f32";
type = ctx->f32;
} else {
intr = "llvm.amdgcn.fmed3.f64";
type = ctx->f64;
}
LLVMValueRef params[] = {
src0,
src1,
src2,
};
return ac_build_intrinsic(ctx, intr, type, params, 3,
AC_FUNC_ATTR_READNONE);
}
LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0,
unsigned bitsize)
{

4
src/amd/common/ac_llvm_build.h
View File

@ -549,6 +549,10 @@ void ac_build_waitcnt(struct ac_llvm_context *ctx, unsigned simm16);
LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0,
unsigned bitsize);
LLVMValueRef ac_build_fmed3(struct ac_llvm_context *ctx, LLVMValueRef src0,
LLVMValueRef src1, LLVMValueRef src2,
unsigned bitsize);
LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0,
unsigned bitsize);

13
src/amd/common/ac_nir_to_llvm.c
View File

@ -1111,14 +1111,11 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
result = emit_minmax_int(&ctx->ac, LLVMIntSGT, result, src[2]);
break;
case nir_op_fmed3: {
LLVMValueRef tmp1 = emit_intrin_2f_param(&ctx->ac, "llvm.minnum",
ac_to_float_type(&ctx->ac, def_type), src[0], src[1]);
LLVMValueRef tmp2 = emit_intrin_2f_param(&ctx->ac, "llvm.maxnum",
ac_to_float_type(&ctx->ac, def_type), src[0], src[1]);
tmp2 = emit_intrin_2f_param(&ctx->ac, "llvm.minnum",
ac_to_float_type(&ctx->ac, def_type), tmp2, src[2]);
result = emit_intrin_2f_param(&ctx->ac, "llvm.maxnum",
ac_to_float_type(&ctx->ac, def_type), tmp1, tmp2);
src[0] = ac_to_float(&ctx->ac, src[0]);
src[1] = ac_to_float(&ctx->ac, src[1]);
src[2] = ac_to_float(&ctx->ac, src[2]);
result = ac_build_fmed3(&ctx->ac, src[0], src[1], src[2],
instr->dest.dest.ssa.bit_size);
break;
}
case nir_op_imed3: {