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Diffstat (limited to 'tests/src/JIT/Regression/JitBlue/DevDiv_278372/DevDiv_278372.il')
| -rw-r--r-- | tests/src/JIT/Regression/JitBlue/DevDiv_278372/DevDiv_278372.il | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/tests/src/JIT/Regression/JitBlue/DevDiv_278372/DevDiv_278372.il b/tests/src/JIT/Regression/JitBlue/DevDiv_278372/DevDiv_278372.il new file mode 100644 index 0000000000..1081877171 --- /dev/null +++ b/tests/src/JIT/Regression/JitBlue/DevDiv_278372/DevDiv_278372.il @@ -0,0 +1,156 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +// This test is a reduced repro case for DevDiv VSO bug 278372. +// The failure mode is that the RyuJIT/x86 backend was not correctly +// handling the case of a variable involving a variable V such that: +// - V is lvMustInit (therefore it must be undefined on some path) +// - V lives in multiple registers, but never on the stack +// - there is at least one other variable that is also lvMustInit, but that +// has a stack location. +// +// In this case, genFnProlog was attempting to zero-init V on the stack. +// +// It was difficult to construct a repro; this repro requires that the test +// be run with COMPlus_JitStressRegs=0x200 (which changes the location of +// variables at block boundaries). + + +// Metadata version: v4.0.30319 +.assembly extern System.Runtime +{ + .publickeytoken = (B0 3F 5F 7F 11 D5 0A 3A ) // .?_....: + .ver 4:1:0:0 +} +.assembly extern System.Console +{ + .publickeytoken = (B0 3F 5F 7F 11 D5 0A 3A ) // .?_....: + .ver 4:0:0:0 +} +.assembly DevDiv_278372 +{ +} + +// =============== CLASS MEMBERS DECLARATION =================== + +.class private auto ansi beforefieldinit DevDiv_278372 + extends [System.Runtime]System.Object +{ + .method public hidebysig static bool check(int32& dummy) cil managed noinlining + { + ldc.i4.1 + ret + } // end of method DevDiv_278372::check + + .method public hidebysig static int32 getX() cil managed noinlining + { + ldc.i4.s 25 + ret + } // end of method DevDiv_278372::getX + + .method public hidebysig static int32 getY() cil managed noinlining + { + ldc.i4.5 + ret + } // end of method DevDiv_278372::getY + + .method public hidebysig static int32 Test(int32 x, + int32 y, + int32 x2, + int32 y2, + int32 x3, + int32 y3) cil managed noinlining + { + .maxstack 2 + .locals init ([0] int32 z, + [1] int32 returnVal, + [2] int32 dummy, + [3] int32 z2) + + // Initialize returnVal to 100 + ldc.i4.s 100 + stloc.1 + + // Here we pass the address of "dummy" to ensure that we have a must-init on-stack variable. + ldloca.s dummy + call bool DevDiv_278372::check(int32&) + brfalse.s L1 + + // Here we are conditionally defining "z", so that it will be must-init + ldarg.0 + ldarg.1 + rem + stloc.0 + L1: ldloc.0 + brfalse.s L2 + + ldc.i4.m1 + stloc.1 + L2: ldarg.2 + ldarg.3 + rem + stloc.3 + ldarg.0 + ldarg.1 + add + stloc.0 + ldloc.0 + ldc.i4.s 30 + beq.s L3 + + ldc.i4.m1 + stloc.1 + L3: ldloc.3 + brfalse.s L4 + + ldc.i4.m1 + stloc.1 + L4: ldloc.1 + ldc.i4.s 100 + bne.un.s L5 + + ldstr "Pass" + call void [System.Console]System.Console::WriteLine(string) + br.s L6 + + L5: ldstr "Fail" + call void [System.Console]System.Console::WriteLine(string) + L6: ldloc.1 + ret + } // end of method DevDiv_278372::Test + + .method public hidebysig static int32 Main() cil managed + { + .entrypoint + // Code size 16 (0x10) + .maxstack 8 + ldc.i4.s 25 + ldc.i4.5 + ldc.i4.s 25 + ldc.i4.5 + ldc.i4.s 25 + ldc.i4.5 + call int32 DevDiv_278372::Test(int32, + int32, + int32, + int32, + int32, + int32) + ret + } // end of method DevDiv_278372::Main + + .method public hidebysig specialname rtspecialname + instance void .ctor() cil managed + { + // Code size 7 (0x7) + .maxstack 8 + ldarg.0 + call instance void [System.Runtime]System.Object::.ctor() + ret + } // end of method DevDiv_278372::.ctor + +} // end of class DevDiv_278372 + + +// ============================================================= |