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ac/nir: drop nir_to_llvm_context from emit_f2f16()

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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 2018-02-09 13:54:26 +01:00
parent e32f374944
commit da8b0b8264
1 changed files with 14 additions and 15 deletions
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29
src/amd/common/ac_nir_to_llvm.c
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@ -1453,43 +1453,42 @@ static LLVMValueRef emit_i2b(struct ac_llvm_context *ctx,
ctx->i32, "");
}
static LLVMValueRef emit_f2f16(struct nir_to_llvm_context *ctx,
static LLVMValueRef emit_f2f16(struct ac_llvm_context *ctx,
LLVMValueRef src0)
{
LLVMValueRef result;
LLVMValueRef cond = NULL;
src0 = ac_to_float(&ctx->ac, src0);
result = LLVMBuildFPTrunc(ctx->builder, src0, ctx->ac.f16, "");
src0 = ac_to_float(ctx, src0);
result = LLVMBuildFPTrunc(ctx->builder, src0, ctx->f16, "");
if (ctx->options->chip_class >= VI) {
if (ctx->chip_class >= VI) {
LLVMValueRef args[2];
/* Check if the result is a denormal - and flush to 0 if so. */
args[0] = result;
args[1] = LLVMConstInt(ctx->ac.i32, N_SUBNORMAL | P_SUBNORMAL, false);
cond = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.class.f16", ctx->ac.i1, args, 2, AC_FUNC_ATTR_READNONE);
args[1] = LLVMConstInt(ctx->i32, N_SUBNORMAL | P_SUBNORMAL, false);
cond = ac_build_intrinsic(ctx, "llvm.amdgcn.class.f16", ctx->i1, args, 2, AC_FUNC_ATTR_READNONE);
}
/* need to convert back up to f32 */
result = LLVMBuildFPExt(ctx->builder, result, ctx->ac.f32, "");
result = LLVMBuildFPExt(ctx->builder, result, ctx->f32, "");
if (ctx->options->chip_class >= VI)
result = LLVMBuildSelect(ctx->builder, cond, ctx->ac.f32_0, result, "");
if (ctx->chip_class >= VI)
result = LLVMBuildSelect(ctx->builder, cond, ctx->f32_0, result, "");
else {
/* for SI/CIK */
/* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
* so compare the result and flush to 0 if it's smaller.
*/
LLVMValueRef temp, cond2;
temp = emit_intrin_1f_param(&ctx->ac, "llvm.fabs",
ctx->ac.f32, result);
temp = emit_intrin_1f_param(ctx, "llvm.fabs", ctx->f32, result);
cond = LLVMBuildFCmp(ctx->builder, LLVMRealUGT,
LLVMBuildBitCast(ctx->builder, LLVMConstInt(ctx->ac.i32, 0x38800000, false), ctx->ac.f32, ""),
LLVMBuildBitCast(ctx->builder, LLVMConstInt(ctx->i32, 0x38800000, false), ctx->f32, ""),
temp, "");
cond2 = LLVMBuildFCmp(ctx->builder, LLVMRealUNE,
temp, ctx->ac.f32_0, "");
temp, ctx->f32_0, "");
cond = LLVMBuildAnd(ctx->builder, cond, cond2, "");
result = LLVMBuildSelect(ctx->builder, cond, ctx->ac.f32_0, result, "");
result = LLVMBuildSelect(ctx->builder, cond, ctx->f32_0, result, "");
}
return result;
}
@ -2011,7 +2010,7 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
result = emit_i2b(&ctx->ac, src[0]);
break;
case nir_op_fquantize2f16:
result = emit_f2f16(ctx->nctx, src[0]);
result = emit_f2f16(&ctx->ac, src[0]);
break;
case nir_op_umul_high:
src[0] = ac_to_integer(&ctx->ac, src[0]);