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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>
43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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template<typename T, size_t N>
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struct tint_array {
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const constant T& operator[](size_t i) const constant { return elements[i]; }
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device T& operator[](size_t i) device { return elements[i]; }
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const device T& operator[](size_t i) const device { return elements[i]; }
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thread T& operator[](size_t i) thread { return elements[i]; }
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const thread T& operator[](size_t i) const thread { return elements[i]; }
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threadgroup T& operator[](size_t i) threadgroup { return elements[i]; }
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const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; }
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T elements[N];
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};
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struct tint_private_vars_struct {
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int counter;
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};
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struct S {
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tint_array<int4, 4> a;
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};
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int foo(thread tint_private_vars_struct* const tint_private_vars) {
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(*(tint_private_vars)).counter = as_type<int>((as_type<uint>((*(tint_private_vars)).counter) + as_type<uint>(1)));
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return (*(tint_private_vars)).counter;
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}
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int bar(thread tint_private_vars_struct* const tint_private_vars) {
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(*(tint_private_vars)).counter = as_type<int>((as_type<uint>((*(tint_private_vars)).counter) + as_type<uint>(2)));
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return (*(tint_private_vars)).counter;
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}
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void tint_symbol(thread tint_private_vars_struct* const tint_private_vars) {
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S x = S{};
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int const tint_symbol_3 = foo(tint_private_vars);
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int const tint_symbol_1_save = tint_symbol_3;
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int const tint_symbol_2 = bar(tint_private_vars);
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x.a[tint_symbol_1_save][tint_symbol_2] = as_type<int>((as_type<uint>(x.a[tint_symbol_1_save][tint_symbol_2]) + as_type<uint>(5)));
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}
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