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Reland "HLSL: force FXC to never unroll loops"

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Now that I've landed this change to Dawn to disable FXC optimizations:
https://dawn-review.googlesource.com/c/dawn/+/70700,, we can reland this
change. The Tint-into-Dawn roll was failing because FXC would miscompile
certain loops into infinite loops when not unrolled.

Also reland
test/bug/fxc/gradient_in_varying_loop/1112.wgsl.expected.hlsl

Bug: tint:1112
Bug: dawn:1203
Change-Id: I641d68864b833e0fbe3b117d397b89ae96482536
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71000
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
This commit is contained in:
Antonio Maiorano
2021-11-25 18:44:50 +00:00
committed by Tint LUCI CQ
parent 91785d277b
commit e2528e9297
50 changed files with 118 additions and 111 deletions
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2
test/buffer/uniform/static_index/read.wgsl.expected.hlsl
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@@ -35,7 +35,7 @@ typedef tint_padded_array_element tint_symbol_11_ret[4];
tint_symbol_11_ret tint_symbol_11(uint4 buffer[13], uint offset) {
tint_padded_array_element arr[4] = (tint_padded_array_element[4])0;
{
for(uint i_1 = 0u; (i_1 < 4u); i_1 = (i_1 + 1u)) {
[loop] for(uint i_1 = 0u; (i_1 < 4u); i_1 = (i_1 + 1u)) {
arr[i_1].el = tint_symbol_10(buffer, (offset + (i_1 * 16u)));
}
}