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0e22bdbae7
In order to avoid declaring too many function parameters, we previously modified this transform to redeclare private variables that are only used inside a single function as function-scope variables. This was broken as it meant that their values did not persist across multiple calls to the same function. Instead, wrap all private variables in a structure and pass it around as a pointer. Fixed: tint:1875 Change-Id: I83f5eb1071d57b9c6af56d6cf21b3a32c6e94260 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/124800 Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: Ben Clayton <bclayton@google.com> Commit-Queue: James Price <jrprice@google.com>
59 lines
1.3 KiB
Plaintext
59 lines
1.3 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct tint_private_vars_struct {
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int a;
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int b;
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int c;
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};
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void uses_a(thread tint_private_vars_struct* const tint_private_vars) {
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(*(tint_private_vars)).a = as_type<int>((as_type<uint>((*(tint_private_vars)).a) + as_type<uint>(1)));
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}
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void uses_b(thread tint_private_vars_struct* const tint_private_vars) {
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(*(tint_private_vars)).b = as_type<int>((as_type<uint>((*(tint_private_vars)).b) * as_type<uint>(2)));
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}
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void uses_a_and_b(thread tint_private_vars_struct* const tint_private_vars) {
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(*(tint_private_vars)).b = (*(tint_private_vars)).a;
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}
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void no_uses() {
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}
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void outer(thread tint_private_vars_struct* const tint_private_vars) {
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(*(tint_private_vars)).a = 0;
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uses_a(tint_private_vars);
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uses_a_and_b(tint_private_vars);
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uses_b(tint_private_vars);
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no_uses();
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}
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kernel void main1() {
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thread tint_private_vars_struct tint_private_vars = {};
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tint_private_vars.a = 42;
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uses_a(&(tint_private_vars));
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return;
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}
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kernel void main2() {
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thread tint_private_vars_struct tint_private_vars = {};
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tint_private_vars.b = 7;
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uses_b(&(tint_private_vars));
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return;
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}
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kernel void main3() {
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thread tint_private_vars_struct tint_private_vars = {};
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outer(&(tint_private_vars));
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no_uses();
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return;
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}
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kernel void main4() {
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no_uses();
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return;
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}
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