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ac/nir: combine shift translation

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Mihai Preda <mhpreda@gmail.com>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19966>
This commit is contained in:
Rhys Perry 2022-11-23 20:46:59 +00:00 • committed by Marge Bot
parent 064336d359
commit 9b19a93319
1 changed files with 15 additions and 27 deletions
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42
src/amd/llvm/ac_nir_to_llvm.c
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@ -713,32 +713,8 @@ static bool visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
case nir_op_ixor:
result = LLVMBuildXor(ctx->ac.builder, src[0], src[1], "");
break;
case nir_op_ishl: {
if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[1])) <
ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])))
src[1] = LLVMBuildZExt(ctx->ac.builder, src[1], LLVMTypeOf(src[0]), "");
else if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[1])) >
ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])))
src[1] = LLVMBuildTrunc(ctx->ac.builder, src[1], LLVMTypeOf(src[0]), "");
LLVMTypeRef type = LLVMTypeOf(src[0]);
src[1] = LLVMBuildAnd(ctx->ac.builder, src[1],
LLVMConstInt(type, LLVMGetIntTypeWidth(type) - 1, false), "");
result = LLVMBuildShl(ctx->ac.builder, src[0], src[1], "");
break;
}
case nir_op_ishr: {
if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[1])) <
ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])))
src[1] = LLVMBuildZExt(ctx->ac.builder, src[1], LLVMTypeOf(src[0]), "");
else if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[1])) >
ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])))
src[1] = LLVMBuildTrunc(ctx->ac.builder, src[1], LLVMTypeOf(src[0]), "");
LLVMTypeRef type = LLVMTypeOf(src[0]);
src[1] = LLVMBuildAnd(ctx->ac.builder, src[1],
LLVMConstInt(type, LLVMGetIntTypeWidth(type) - 1, false), "");
result = LLVMBuildAShr(ctx->ac.builder, src[0], src[1], "");
break;
}
case nir_op_ishl:
case nir_op_ishr:
case nir_op_ushr: {
if (ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[1])) <
ac_get_elem_bits(&ctx->ac, LLVMTypeOf(src[0])))
@ -749,7 +725,19 @@ static bool visit_alu(struct ac_nir_context *ctx, const nir_alu_instr *instr)
LLVMTypeRef type = LLVMTypeOf(src[0]);
src[1] = LLVMBuildAnd(ctx->ac.builder, src[1],
LLVMConstInt(type, LLVMGetIntTypeWidth(type) - 1, false), "");
result = LLVMBuildLShr(ctx->ac.builder, src[0], src[1], "");
switch (instr->op) {
case nir_op_ishl:
result = LLVMBuildShl(ctx->ac.builder, src[0], src[1], "");
break;
case nir_op_ishr:
result = LLVMBuildAShr(ctx->ac.builder, src[0], src[1], "");
break;
case nir_op_ushr:
result = LLVMBuildLShr(ctx->ac.builder, src[0], src[1], "");
break;
default:
break;
}
break;
}
case nir_op_ilt: