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ac/nir: add back nir_op_fmod

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radeonsi doesn't lower it for doubles.

This partially reverts commit d861401554.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Marek Olšák 2019-10-08 00:08:19 -04:00
parent 09e0e4c93c
commit b7fc082b28
1 changed files with 11 additions and 0 deletions
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11
src/amd/llvm/ac_nir_to_llvm.c
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@ -548,6 +548,17 @@ static void visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
case nir_op_umod:
result = LLVMBuildURem(ctx->ac.builder, src[0], src[1], "");
break;
case nir_op_fmod:
/* lower_fmod only lower 16-bit and 32-bit fmod */
assert(instr->dest.dest.ssa.bit_size == 64);
src[0] = ac_to_float(&ctx->ac, src[0]);
src[1] = ac_to_float(&ctx->ac, src[1]);
result = ac_build_fdiv(&ctx->ac, src[0], src[1]);
result = emit_intrin_1f_param(&ctx->ac, "llvm.floor",
ac_to_float_type(&ctx->ac, def_type), result);
result = LLVMBuildFMul(ctx->ac.builder, src[1] , result, "");
result = LLVMBuildFSub(ctx->ac.builder, src[0], result, "");
break;
case nir_op_irem:
result = LLVMBuildSRem(ctx->ac.builder, src[0], src[1], "");
break;