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Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/user/1779')
| -rw-r--r-- | results/classifier/mode-deepseek-r1:32b/reasoning/user/1779 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/user/1779 b/results/classifier/mode-deepseek-r1:32b/reasoning/user/1779 new file mode 100644 index 000000000..0c2d1f084 --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/user/1779 @@ -0,0 +1,15 @@ +<think> +Okay, I need to figure out whether this bug report about PowerPC AltiVec is user-mode or system-mode related. Let's break it down. + +The problem is that in Rust code using the Altivec target feature, subnormal source vector values aren't being flushed to zero as per the specification. The user provided a program where they add two floating-point numbers and expect the result to be positive zero, but instead get negative zero because only results are flushed. + +Altivec instructions typically operate in different modes regarding denormalized (subnormal) numbers. In Normalized/Non-Normalized (NJ) mode, both source vectors should be flushed to zero, but according to the report, this isn't happening for sources—they’re only doing it for results. + +The issue arises when compiling and running a Rust program that uses Altivec intrinsics. The failure occurs in user-space code, meaning it's within an application rather than the kernel or hardware level. The problem seems to stem from how the compiler (likely GCC or LLVM) handles the Altivec instructions, specifically whether the subnormal flush is applied correctly during vector operations. + +Since the bug affects the behavior of user-space programs and doesn't involve low-level system components like device drivers or OS functions, it's likely a user-mode issue. It probably relates to how the compiler translates Rust code into machine instructions for Altivec, possibly missing some steps in handling denormalized values as per the architecture specs. + +I don’t see any mention of hardware-specific operations beyond what userland can do, so this points towards a software-level problem rather than something in system mode. The assertion failures occur within an application's logic, indicating that the issue is within the program's execution and not in the underlying OS or hypervisor. +</think> + +user \ No newline at end of file |