add results

1 files changed, 21 insertions, 0 deletions

diff --git a/results/classifier/deepseek-r1:32b/reasoning/instruction/1877794 b/results/classifier/deepseek-r1:32b/reasoning/instruction/1877794
new file mode 100644
index 000000000..3de770245
--- /dev/null
+++ b/results/classifier/deepseek-r1:32b/reasoning/instruction/1877794
@@ -0,0 +1,21 @@
+<think>
+Okay, so I'm looking at this bug report related to QEMU, specifically involving a crash when running glxgears under certain conditions. Let me try to break down what's happening here.
+
+The user mentions that they're working on implementing drm IOCTLs in their own branch of QEMU and noticed that glxgears crashes with SIGILL during GLXSwapBuffers(). They spent about two weeks tracing the call stack, only to find a bad shift instruction. The original intention was to generate an 'shr_i64' which would translate to 'RLDICL' on PPC64LE, but instead, it's ending up with an invalid instruction FFFFFFE0 because the shift count (c) is -1.
+
+Wait, how does c become -1? I know that in some architectures, shift counts are modulo the number of bits. For example, shifting a 64-bit register by more than 63 would wrap around or cause undefined behavior. But getting a negative shift count like -1 seems odd because shift operations usually don't handle negative counts well.
+
+The user tried disabling constant folding for arithmetic instructions and found that this resolved the issue. Constant folding is an optimization where expressions with known values are precomputed during compilation, which can lead to more efficient code but might cause issues if not handled correctly, especially when dealing with edge cases like invalid shifts.
+
+They then re-enabled constant folding on various instructions but found that enabling it on subtraction caused the bug to reappear. That's interesting because subtraction itself doesn't directly relate to shifting, unless there's an optimization path where a subtraction leads to an incorrect value being used as a shift count elsewhere.
+
+So putting this together: When constant folding is applied during subtraction operations, it might be producing values that later get incorrectly used in shift instructions. For example, maybe a subtraction is resulting in -1, and then that result is being passed into a shift instruction without proper bounds checking or sign handling, leading to an invalid shift count.
+
+Since the problem arises from how instructions are generated during code optimization (specifically constant folding), this seems like an issue with the way QEMU's translator or optimizer handles certain arithmetic operations. The resulting invalid instruction causes a SIGILL, which is an illegal instruction trap, hence a runtime error.
+
+Therefore, the bug falls under the 'instruction' category because it involves a faulty generated instruction causing the crash.
+</think>
+
+The issue arises from an incorrect shift instruction being generated due to constant folding optimizations leading to an invalid value (-1) for the shift count. This results in an illegal instruction when executed.
+
+**Answer:** instruction
\ No newline at end of file