Antonio Maiorano d388bc9b36 Restore "MSL writer: make signed int overflow defined behaviour"
This reverts commit e33b0baa088146fc06881387157a92e19fcf5b7b.

Added tests/expressions/literals/intmin.wgsl test.

Bug: tint:124
Change-Id: I3d46f939ff20fa377ddb5fcb52f9afe728b8e430
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60441
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
2021-07-30 18:59:06 +00:00

58 lines
1.6 KiB
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#include <metal_stdlib>
using namespace metal;
struct tint_padded_array_element {
/* 0x0000 */ int el;
/* 0x0004 */ int8_t tint_pad[12];
};
struct tint_array_wrapper {
/* 0x0000 */ tint_padded_array_element arr[3];
};
struct buf0 {
/* 0x0000 */ tint_array_wrapper x_GLF_uniform_int_values;
};
struct main_out {
float4 x_GLF_color_1;
};
struct tint_symbol_1 {
float4 x_GLF_color_1 [[color(0)]];
};
void main_1(constant buf0& x_5, thread float4* const tint_symbol_4) {
int x_32_phi = 0;
int const x_24 = x_5.x_GLF_uniform_int_values.arr[1].el;
float const x_25 = float(x_24);
*(tint_symbol_4) = float4(x_25, x_25, x_25, x_25);
int const x_28 = x_5.x_GLF_uniform_int_values.arr[0].el;
int const x_30 = (as_type<int>((as_type<uint>(x_28) << as_type<uint>(x_28))) >> as_type<uint>(1));
x_32_phi = x_24;
while (true) {
int const x_32 = x_32_phi;
if ((x_30 < 10)) {
} else {
break;
}
int x_33 = 0;
x_33 = as_type<int>((as_type<uint>(x_32) + as_type<uint>(1)));
int const x_39 = x_5.x_GLF_uniform_int_values.arr[2].el;
if ((x_33 == as_type<int>(x_39))) {
float const x_43 = float(x_28);
*(tint_symbol_4) = float4(x_43, x_25, x_25, x_43);
break;
}
{
x_32_phi = x_33;
}
}
return;
}
fragment tint_symbol_1 tint_symbol(constant buf0& x_5 [[buffer(0)]]) {
thread float4 tint_symbol_5 = 0.0f;
main_1(x_5, &(tint_symbol_5));
main_out const tint_symbol_2 = {.x_GLF_color_1=tint_symbol_5};
tint_symbol_1 const tint_symbol_3 = {.x_GLF_color_1=tint_symbol_2.x_GLF_color_1};
return tint_symbol_3;
}