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Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/instruction/2474')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/instruction/2474 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/instruction/2474 b/results/classifier/deepseek-r1:32b/reasoning/instruction/2474 new file mode 100644 index 000000000..fb2e1f791 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/instruction/2474 @@ -0,0 +1,17 @@ +<think> +Okay, I need to classify this bug report into one of the given categories: instruction, syscall, or runtime. Let's go through the problem step by step. + +The user provided a detailed bug report about an issue with the translation of the "vpgatherqq" instruction in QEMU. They observed that when using xmm4 as part of the gather instruction, the offset calculation was incorrect. The offsets for other registers like xmm2 and xmm5 were expected to be in an arithmetic sequence butxmm4's offset wasn't matching. + +They provided assembly code where different xmm registers are used in vpgatherqq instructions. When compiling and running this with QEMU, the generated micro-ops showed that the offset for xmm4 was 0x310 instead of the expected 0x450. They tracked down the issue to a specific part of the code in QEMU's translator. + +The problematic section is in target/i386/tcg/translate.c, specifically the gen_lea_modrm_0 function around line 2215. The code there checks if rm (register) is 4 and then processes it further. It seems that when index is 4, it's set to -1, which might be causing incorrect offset calculations for registers beyond a certain point. + +From the output, using xmm4 resulted in an unexpected offset of 0x310, while others like xmm2 and xmm5 had their expected offsets based on an arithmetic sequence. This suggests that QEMU is misinterpreting how the registers are being used in the gather instruction when register 4 (xmm4) is involved. + +The fact that the helper function for vpgatherqq also uses a wrong value further supports that this is a translation issue specific to certain instructions, not a runtime error or a system call problem. The error occurs during the generation of micro-ops, which is part of instruction execution. + +So, categorizing the bug: it's an issue with how QEMU translates and handles a specific instruction ("vpgatherqq") when involving certain registers like xmm4. Therefore, this falls under the "instruction" category. +</think> + +instruction \ No newline at end of file |