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82 changes: 82 additions & 0 deletions
82
src/tests/Exceptions/UnwindFpBleedTest/UnwindFpBleedTest.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| using System; | ||
| using System.Runtime.CompilerServices; | ||
|
|
||
| class Program | ||
| { | ||
| static int Main() | ||
| { | ||
| double a0 = 1.0; | ||
| double a1 = 2.0; | ||
| double a2 = 3.0; | ||
| double a3 = 4.0; | ||
| double a4 = 5.0; | ||
| double a5 = 6.0; | ||
| double a6 = 7.0; | ||
| double a7 = 8.0; | ||
| double a8 = 9.0; | ||
| double a9 = 10.0; | ||
|
|
||
| for (int i = 1; i < 10; i++) | ||
| { | ||
| a0 *= 1.0; | ||
| a1 *= 2.0; | ||
| a2 *= 3.0; | ||
| a3 *= 4.0; | ||
| a4 *= 5.0; | ||
| a5 *= 6.0; | ||
| a6 *= 7.0; | ||
| a7 *= 8.0; | ||
| a8 *= 9.0; | ||
| a9 *= 10.0; | ||
| } | ||
|
|
||
| EHMethod(); | ||
|
|
||
| bool isExpectedValue = | ||
| a0 == 1.0 | ||
| && a1 == Math.Pow(2, 10) | ||
| && a2 == Math.Pow(3, 10) | ||
| && a3 == Math.Pow(4, 10) | ||
| && a4 == Math.Pow(5, 10) | ||
| && a5 == Math.Pow(6, 10) | ||
| && a6 == Math.Pow(7, 10) | ||
| && a7 == Math.Pow(8, 10) | ||
| && a8 == Math.Pow(9, 10) | ||
| && a9 == Math.Pow(10, 10); | ||
|
|
||
| return isExpectedValue ? 100 : 1; | ||
| } | ||
|
|
||
| [MethodImpl(MethodImplOptions.NoInlining)] | ||
| static void EHMethod() | ||
| { | ||
| try | ||
| { | ||
| FloatManipulationMethod(); | ||
| } | ||
| catch (Exception) { } | ||
| } | ||
|
|
||
| [MethodImpl(MethodImplOptions.NoInlining)] | ||
| static void FloatManipulationMethod() | ||
| { | ||
| // Enough locals to try to get the JIT to touch at least some of the non-volatile | ||
| // registers (some spilling might happen, but hopefully the lack of EH prioritizes | ||
| // registers). | ||
| double a0 = 1, a1 = 2, a2 = 3, a3 = 4, a4 = 5, a5 = 6, a6 = 7, a7 = 8; | ||
| double a8 = 1, a9 = 2, a10 = 3, a11 = 4, a12 = 5, a13 = 6, a14 = 7, a15 = 8; | ||
| double a16 = 1, a17 = 2, a18 = 3, a19 = 4, a20 = 5, a21 = 6, a22 = 7, a23 = 8; | ||
| double a24 = 1, a25 = 2, a26 = 3, a27 = 4, a28 = 5, a29 = 6, a30 = 7, a31 = 8; | ||
|
|
||
| // Some busy math to prevent easy optimizations and folding. | ||
| for (int i = 0; i < 5; i++) | ||
| { | ||
| a0 -= 1; a1 -= 2; a2 -= 3; a3 -= 4; a4 -= 5; a5 -= 6; a6 -= 7; a7 -= 8; | ||
| a8 -= 9; a9 -= 10; a10 -= 11; a11 -= 12; a12 -= 13; a13 -= 14; a14 -= 15; a15 -= 16; | ||
| a16 -= 17; a17 -= 18; a18 -= 19; a19 -= 20; a20 -= 21; a21 -= 22; a22 -= 23; a23 -= 24; | ||
| a24 -= 25; a25 -= 26; a26 -= 27; a27 -= 28; a28 -= 29; a29 -= 30; a30 -= 31; a31 -= 32; | ||
| } | ||
|
|
||
| throw new Exception(); | ||
| } | ||
| } |
8 changes: 8 additions & 0 deletions
8
src/tests/Exceptions/UnwindFpBleedTest/UnwindFpBleedTest.csproj
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Compile Include="UnwindFpBleedTest.cs" /> | ||
| </ItemGroup> | ||
| </Project> |
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