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ac: add ac_build_frexp_mant() helper and 16-bit/32-bit support

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Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2019-03-21 15:47:04 +01:00
parent de783a6897
commit 1bf9311c59
3 changed files with 31 additions and 2 deletions
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25
src/amd/common/ac_llvm_build.c
View file

@ -3926,3 +3926,28 @@ ac_build_shuffle(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef ind
AC_FUNC_ATTR_READNONE |
AC_FUNC_ATTR_CONVERGENT);
}
LLVMValueRef
ac_build_frexp_mant(struct ac_llvm_context *ctx, LLVMValueRef src0,
unsigned bitsize)
{
LLVMTypeRef type;
char *intr;
if (bitsize == 16) {
intr = "llvm.amdgcn.frexp.mant.f16";
type = ctx->f16;
} else if (bitsize == 32) {
intr = "llvm.amdgcn.frexp.mant.f32";
type = ctx->f32;
} else {
intr = "llvm.amdgcn.frexp.mant.f64";
type = ctx->f64;
}
LLVMValueRef params[] = {
src0,
};
return ac_build_intrinsic(ctx, intr, type, params, 1,
AC_FUNC_ATTR_READNONE);
}

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

@ -677,6 +677,10 @@ ac_build_quad_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src,
LLVMValueRef
ac_build_shuffle(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef index);
LLVMValueRef
ac_build_frexp_mant(struct ac_llvm_context *ctx, LLVMValueRef src0,
unsigned bitsize);
#ifdef __cplusplus
}
#endif

4
src/amd/common/ac_nir_to_llvm.c
View file

@ -809,8 +809,8 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
break;
case nir_op_frexp_sig:
src[0] = ac_to_float(&ctx->ac, src[0]);
result = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.frexp.mant.f64",
ctx->ac.f64, src, 1, AC_FUNC_ATTR_READNONE);
result = ac_build_frexp_mant(&ctx->ac, src[0],
instr->dest.dest.ssa.bit_size);
break;
case nir_op_fpow:
result = emit_intrin_2f_param(&ctx->ac, "llvm.pow",