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Antonio Maiorano bc5d8f6bcf Revert "HLSL: force FXC to never unroll loops" 
This reverts commit 11d09f2fe7.

Reason for revert: Failing roll of Tint to Dawn: https://dawn-review.googlesource.com/c/dawn/+/70100

Original change's description:
> HLSL: force FXC to never unroll loops
>
> Emit the "[loop]" attribute on "for" and "while" so that FXC does not
> attempt to unroll them. This is to work around an FXC bug where it fails
> to unroll loops with gradient operations.
>
> FXC ostensibly unrolls such loops because gradient operations require
> uniform control flow, and loops that have varying iterations may
> possibly not be uniform. Tint will eventually validate that control flow
> is indeed uniform, so forcing FXC to avoid unrolling in these cases
> should be fine.
>
> Bug: tint:1112
> Change-Id: I10077f8b62fbbb230a0003f3864c75a8fe0e1d18
> Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69880
> Kokoro: Kokoro <noreply+kokoro@google.com>
> Reviewed-by: Ben Clayton <bclayton@google.com>
> Commit-Queue: Antonio Maiorano <amaiorano@google.com>

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: tint:1112
Change-Id: I8e8f3c0abfa6e6bc5d0e67af9428a46ef867d5c1
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70540
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
 		2021-11-22 19:31:56 +00:00
..
assign_to_function_var.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_function_var.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
assign_to_function_var.wgsl.expected.hlsl Revert "HLSL: force FXC to never unroll loops" 2021-11-22 19:31:56 +00:00
assign_to_function_var.wgsl.expected.msl msl: Handle buffer variables in transform 2021-10-28 15:00:39 +00:00
assign_to_function_var.wgsl.expected.spvasm Add optional access to ptr<> 2021-06-04 22:17:37 +00:00
assign_to_function_var.wgsl.expected.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_private_var.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_private_var.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
assign_to_private_var.wgsl.expected.hlsl Revert "HLSL: force FXC to never unroll loops" 2021-11-22 19:31:56 +00:00
assign_to_private_var.wgsl.expected.msl msl: Handle buffer variables in transform 2021-10-28 15:00:39 +00:00
assign_to_private_var.wgsl.expected.spvasm Add optional access to ptr<> 2021-06-04 22:17:37 +00:00
assign_to_private_var.wgsl.expected.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_storage_var.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_storage_var.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
assign_to_storage_var.wgsl.expected.hlsl Revert "HLSL: force FXC to never unroll loops" 2021-11-22 19:31:56 +00:00
assign_to_storage_var.wgsl.expected.msl msl: Handle buffer variables in transform 2021-10-28 15:00:39 +00:00
assign_to_storage_var.wgsl.expected.spvasm Add optional access to ptr<> 2021-06-04 22:17:37 +00:00
assign_to_storage_var.wgsl.expected.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_subexpr.wgsl writer/msl: Wrap each array type in a struct 2021-06-02 17:23:03 +00:00
assign_to_subexpr.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
assign_to_subexpr.wgsl.expected.hlsl writer/hlsl: Don't wrap arrays in structures 2021-07-05 15:20:57 +00:00
assign_to_subexpr.wgsl.expected.msl transform/msl: Run InlinePointerLets and Simplify 2021-06-18 09:47:23 +00:00
assign_to_subexpr.wgsl.expected.spvasm transform/spirv: Use InlinePointerLets & Simplify 2021-06-10 17:34:44 +00:00
assign_to_subexpr.wgsl.expected.wgsl writer/msl: Wrap each array type in a struct 2021-06-02 17:23:03 +00:00
assign_to_workgroup_var.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
assign_to_workgroup_var.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
assign_to_workgroup_var.wgsl.expected.hlsl Revert "HLSL: force FXC to never unroll loops" 2021-11-22 19:31:56 +00:00
assign_to_workgroup_var.wgsl.expected.msl msl: Handle buffer variables in transform 2021-10-28 15:00:39 +00:00
assign_to_workgroup_var.wgsl.expected.spvasm Add optional access to ptr<> 2021-06-04 22:17:37 +00:00
assign_to_workgroup_var.wgsl.expected.wgsl wgsl: Deprecate [[access]] decorations 2021-06-04 20:41:47 +00:00
function_parameter.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
function_parameter.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
function_parameter.wgsl.expected.hlsl writer/hlsl: Don't wrap arrays in structures 2021-07-05 15:20:57 +00:00
function_parameter.wgsl.expected.msl Add transform/WrapArraysInStructs 2021-06-16 09:19:36 +00:00
function_parameter.wgsl.expected.spvasm writer/msl: Wrap each array type in a struct 2021-06-02 17:23:03 +00:00
function_parameter.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
function_return_type.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
function_return_type.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
function_return_type.wgsl.expected.hlsl writer/hlsl: Don't wrap arrays in structures 2021-07-05 15:20:57 +00:00
function_return_type.wgsl.expected.msl Add transform/WrapArraysInStructs 2021-06-16 09:19:36 +00:00
function_return_type.wgsl.expected.spvasm writer/msl: Wrap each array type in a struct 2021-06-02 17:23:03 +00:00
function_return_type.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
size.wgsl Allow array size to be a module-scope constant 2021-09-02 13:49:59 +00:00
size.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
size.wgsl.expected.hlsl Allow array size to be a module-scope constant 2021-09-02 13:49:59 +00:00
size.wgsl.expected.msl Allow array size to be a module-scope constant 2021-09-02 13:49:59 +00:00
size.wgsl.expected.spvasm Allow array size to be a module-scope constant 2021-09-02 13:49:59 +00:00
size.wgsl.expected.wgsl Allow array size to be a module-scope constant 2021-09-02 13:49:59 +00:00
type_constructor.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
type_constructor.wgsl.expected.glsl GLSL: add .expected.glsl files for all tests. 2021-11-16 15:15:36 +00:00
type_constructor.wgsl.expected.hlsl writer/hlsl: Don't wrap arrays in structures 2021-07-05 15:20:57 +00:00
type_constructor.wgsl.expected.msl Restore "MSL writer: make signed int overflow defined behaviour" 2021-07-30 18:59:06 +00:00
type_constructor.wgsl.expected.spvasm writer/msl: Hoist array and struct initializers 2021-06-01 12:08:20 +00:00
type_constructor.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00