diff options
Diffstat (limited to 'results/classifier/qwen3:32b/output/instruction/2802')
| -rw-r--r-- | results/classifier/qwen3:32b/output/instruction/2802 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/output/instruction/2802 b/results/classifier/qwen3:32b/output/instruction/2802 new file mode 100644 index 00000000..e174b9b2 --- /dev/null +++ b/results/classifier/qwen3:32b/output/instruction/2802 @@ -0,0 +1,29 @@ + + + +Sparc: fdtox/fqtox instructions incorrectly select destination register +Description of problem: +This bug report is mostly for informational purposes as I will be posting a fix for the bug. + +The `fdtox` and `fqtox` instructions incorrectly select the destination register when the destination register is higher than `f31`. +Steps to reproduce: +1. Install Sparc cross compiler `gcc-12-sparc64-linux-gnu`(in Debian) +2. Compile the test program using `sparc64-linux-gnu-gcc-12 -m64 -o test_program -static test_program.c` +3. Run the test program using `qemu-sparc64-static ./test_program` +4. Expected output is 60. Prints 0 instead. +Additional information: +Test program to test the issue: + +```c +#include <stdio.h> + +int main(int argc, char** argv) { + long long truncated = 0; + __asm__("fdtox %0,%%f32\n\t" :: "f"(60.0)); + __asm__("fmovd %%f32,%0\n\t" : "=f"(truncated)); + printf("%lld\n", truncated); + return 0; +} +``` + +The issue is caused by the commit 0bba7572d4. Where certain changes were made in the way destination registers are selected(moving the DFPREG/QFPREG to decodetree). |