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Restore "MSL writer: make signed int overflow defined behaviour"

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This reverts commit e33b0baa08.

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>
This commit is contained in:
Antonio Maiorano
2021-07-30 18:59:06 +00:00
committed by Tint LUCI CQ
parent 9bdf2dcc6b
commit d388bc9b36
686 changed files with 4111 additions and 3079 deletions
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7
test/expressions/literals/intmin.wgsl Normal file
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@@ -0,0 +1,7 @@
fn add_int_min_explicit() -> i32 {
var a = -2147483648;
var b = a + 1;
var c = -2147483648 + 1;
return c;
}

11
test/expressions/literals/intmin.wgsl.expected.hlsl Normal file
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@@ -0,0 +1,11 @@
[numthreads(1, 1, 1)]
void unused_entry_point() {
return;
}
int add_int_min_explicit() {
int a = -2147483648;
int b = (a + 1);
int c = (-2147483648 + 1);
return c;
}

10
test/expressions/literals/intmin.wgsl.expected.msl Normal file
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@@ -0,0 +1,10 @@
#include <metal_stdlib>
using namespace metal;
int add_int_min_explicit() {
int a = (-2147483647 - 1);
int b = as_type<int>((as_type<uint>(a) + as_type<uint>(1)));
int c = as_type<int>((as_type<uint>((-2147483647 - 1)) + as_type<uint>(1)));
return c;
}

40
test/expressions/literals/intmin.wgsl.expected.spvasm Normal file
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@@ -0,0 +1,40 @@
; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 20
; Schema: 0
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %unused_entry_point "unused_entry_point"
OpExecutionMode %unused_entry_point LocalSize 1 1 1
OpName %unused_entry_point "unused_entry_point"
OpName %add_int_min_explicit "add_int_min_explicit"
OpName %a "a"
OpName %b "b"
OpName %c "c"
%void = OpTypeVoid
%1 = OpTypeFunction %void
%int = OpTypeInt 32 1
%5 = OpTypeFunction %int
%int_n2147483648 = OpConstant %int -2147483648
%_ptr_Function_int = OpTypePointer Function %int
%12 = OpConstantNull %int
%int_1 = OpConstant %int 1
%unused_entry_point = OpFunction %void None %1
%4 = OpLabel
OpReturn
OpFunctionEnd
%add_int_min_explicit = OpFunction %int None %5
%8 = OpLabel
%a = OpVariable %_ptr_Function_int Function %12
%b = OpVariable %_ptr_Function_int Function %12
%c = OpVariable %_ptr_Function_int Function %12
OpStore %a %int_n2147483648
%13 = OpLoad %int %a
%15 = OpIAdd %int %13 %int_1
OpStore %b %15
%17 = OpIAdd %int %int_n2147483648 %int_1
OpStore %c %17
%19 = OpLoad %int %c
OpReturnValue %19
OpFunctionEnd

6
test/expressions/literals/intmin.wgsl.expected.wgsl Normal file
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@@ -0,0 +1,6 @@
fn add_int_min_explicit() -> i32 {
var a = -2147483648;
var b = (a + 1);
var c = (-2147483648 + 1);
return c;
}