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writer/hlsl: Don't emit literal integer divide-by-zeros

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FXC errors on these, and they are undefined behavior in WGSL.

Bug: tint:1083
Change-Id: I7643fdc6991f8729f274535b603b761398412398
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60500
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
This commit is contained in:
Ben Clayton
2021-08-03 17:51:32 +00:00
committed by Tint LUCI CQ
parent 72dad76c21
commit 51750f15d2
7 changed files with 48 additions and 8 deletions
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2
test/bug/tint/1083.wgsl.expected.hlsl
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@@ -5,5 +5,5 @@ void f() {
const int c = (1 / 0);
return;
}
C:\src\tint\test\Shader@0x000001BC7A7DD8D0(3,18-22): error X4010: Unsigned integer divide by zero
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x000002477B82F5C0(3,18-22): error X4010: Unsigned integer divide by zero

4
test/vk-gl-cts/graphicsfuzz/cov-loop-increment-or-divide-by-loop-index/0-opt.spvasm.expected.hlsl
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@@ -53,6 +53,6 @@ tint_symbol main() {
const tint_symbol tint_symbol_3 = {tint_symbol_1.x_GLF_color_1};
return tint_symbol_3;
}
C:\src\tint\test\Shader@0x0000021F05CF11C0(19,14-18): error X4010: Unsigned integer divide by zero
C:\src\tint\test\Shader@0x0000021F05CF11C0(19,14-18): warning X3556: integer divides may be much slower, try using uints if possible.
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x000001481B9B0CA0(19,14-18): error X4010: Unsigned integer divide by zero
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x000001481B9B0CA0(19,14-18): warning X3556: integer divides may be much slower, try using uints if possible.

4
test/vk-gl-cts/graphicsfuzz/cov-loop-increment-or-divide-by-loop-index/0-opt.wgsl.expected.hlsl
View File

@@ -53,6 +53,6 @@ tint_symbol main() {
const tint_symbol tint_symbol_3 = {tint_symbol_1.x_GLF_color_1};
return tint_symbol_3;
}
C:\src\tint\test\Shader@0x00000199CF77C330(19,14-18): error X4010: Unsigned integer divide by zero
C:\src\tint\test\Shader@0x00000199CF77C330(19,14-18): warning X3556: integer divides may be much slower, try using uints if possible.
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x0000029A80398B60(19,14-18): error X4010: Unsigned integer divide by zero
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x0000029A80398B60(19,14-18): warning X3556: integer divides may be much slower, try using uints if possible.

2
test/vk-gl-cts/graphicsfuzz/cov-modulo-zero-never-executed/0-opt.spvasm.expected.hlsl
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@@ -63,5 +63,5 @@ tint_symbol_2 main(tint_symbol_1 tint_symbol) {
const tint_symbol_2 tint_symbol_7 = {tint_symbol_3.x_GLF_color_1};
return tint_symbol_7;
}
C:\src\tint\test\Shader@0x000002787AC0C3C0(25,16-23): error X4010: Unsigned integer divide by zero
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x0000028809903F10(25,16-23): error X4010: Unsigned integer divide by zero

2
test/vk-gl-cts/graphicsfuzz/cov-modulo-zero-never-executed/0-opt.wgsl.expected.hlsl
View File

@@ -63,5 +63,5 @@ tint_symbol_2 main(tint_symbol_1 tint_symbol) {
const tint_symbol_2 tint_symbol_7 = {tint_symbol_3.x_GLF_color_1};
return tint_symbol_7;
}
C:\src\tint\test\Shader@0x0000020234C8C230(25,16-23): error X4010: Unsigned integer divide by zero
O:\src\chrome\src\third_party\dawn\third_party\tint\test\Shader@0x000001EB404C9FC0(25,16-23): error X4010: Unsigned integer divide by zero