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ac/llvm: implement nir_intrinsic_global_atomic_{fmin,fmax} 

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12716>
This commit is contained in:
Samuel Pitoiset 2021-09-03 10:35:51 +02:00 committed by Marge Bot
parent 9deee80f51
commit 7a25451752
1 changed files with 24 additions and 1 deletions
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25
src/amd/llvm/ac_nir_to_llvm.c
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@ -2162,7 +2162,13 @@ static LLVMValueRef visit_global_atomic(struct ac_nir_context *ctx,
/* use "singlethread" sync scope to implement relaxed ordering */
const char *sync_scope = "singlethread-one-as";
LLVMTypeRef ptr_type = LLVMPointerType(LLVMTypeOf(data), AC_ADDR_SPACE_GLOBAL);
if (instr->intrinsic == nir_intrinsic_global_atomic_fmin ||
instr->intrinsic == nir_intrinsic_global_atomic_fmax) {
data = ac_to_float(&ctx->ac, data);
}
LLVMTypeRef data_type = LLVMTypeOf(data);
LLVMTypeRef ptr_type = LLVMPointerType(data_type, AC_ADDR_SPACE_GLOBAL);
addr = LLVMBuildIntToPtr(ctx->ac.builder, addr, ptr_type, "");
@ -2170,6 +2176,21 @@ static LLVMValueRef visit_global_atomic(struct ac_nir_context *ctx,
LLVMValueRef data1 = get_src(ctx, instr->src[2]);
result = ac_build_atomic_cmp_xchg(&ctx->ac, addr, data, data1, sync_scope);
result = LLVMBuildExtractValue(ctx->ac.builder, result, 0, "");
} else if (instr->intrinsic == nir_intrinsic_global_atomic_fmin ||
instr->intrinsic == nir_intrinsic_global_atomic_fmax) {
const char *op = instr->intrinsic == nir_intrinsic_global_atomic_fmin ? "fmin" : "fmax";
char name[64], type[8];
LLVMValueRef params[2];
int arg_count = 0;
params[arg_count++] = addr;
params[arg_count++] = data;
ac_build_type_name_for_intr(data_type, type, sizeof(type));
snprintf(name, sizeof(name), "llvm.amdgcn.global.atomic.%s.%s.p1%s.%s", op, type, type, type);
result = ac_build_intrinsic(&ctx->ac, name, data_type, params, arg_count, 0);
result = ac_to_integer(&ctx->ac, result);
} else {
switch (instr->intrinsic) {
case nir_intrinsic_global_atomic_add:
@ -3698,6 +3719,8 @@ static void visit_intrinsic(struct ac_nir_context *ctx, nir_intrinsic_instr *ins
case nir_intrinsic_global_atomic_xor:
case nir_intrinsic_global_atomic_exchange:
case nir_intrinsic_global_atomic_comp_swap:
case nir_intrinsic_global_atomic_fmin:
case nir_intrinsic_global_atomic_fmax:
result = visit_global_atomic(ctx, instr);
break;
case nir_intrinsic_ssbo_atomic_add: