Bug#327351: gcc-4.0: Gcc miscompiles libc on hppa - breaks rounding

[Wesley W. Terpstra]

On Sep 9, 2005, at 3:11 PM, Falk Hueffner wrote: "Wesley W. Terpstra" <[EMAIL PROTECTED]> writes:   __asm__ ("fstd %%fr0,0(%1)" : "=m" (*sw) : "r" (sw));   sw[0] &= ~FE_DOWNWARD;   sw[0] |= round;   __asm__ ("fldd 0(%0),%%fr0" : : "r" (sw)); This is not a bug in gcc. The second asm is not marked as reading *sw, so the store can be moved behind it, or omitted if it isn't needed elsewhere. If you access *sw, you need to tell gcc. So the bug is in whatever code contains this asm. I don't know how the __asm__ directive works... "r" isn't for read? What exactly are you saying should be changed to fix it? This code is from libc, so if I can verify what you say, I'll reassign the bug.