On Tue, Mar 08, 2022 at 08:09:25AM -0800, H.J. Lu wrote:
> > Ok. So, what do you think about replacing the libgcc/ part of your patch
> > with that
> > /* __builtin_eh_return can't handle stack realignment, so disable SSE in
> > 32-bit libgcc functions that call it. */
> > #ifndef __x86_64__
> > #define LIBGCC2_UNWIND_ATTRIBUTE __attribute__((target ("no-sse")))
> > #endif
> > ?
>
> Yes, it should work.
So, how do we move on with this?
I can't self-approve my own patch, so can anyone please ack the following
provided it passes bootstraps/regtests ({x86_64,i686}-linux) that are
currently pending?
That can go in independently from your patch, and if it is committed,
your V3 patch with the libgcc/ hunks removed is preapproved for trunk.
2022-03-08 Jakub Jelinek <[email protected]>
PR target/104781
* config/i386/i386.h (LIBGCC2_UNWIND_ATTRIBUTE): Define for ia32.
--- gcc/config/i386/i386.h.jj 2022-02-25 12:06:45.535493490 +0100
+++ gcc/config/i386/i386.h 2022-03-08 11:20:43.207043370 +0100
@@ -2848,6 +2848,12 @@ extern enum attr_cpu ix86_schedule;
#define NUM_X86_64_MS_CLOBBERED_REGS 12
#endif
+/* __builtin_eh_return can't handle stack realignment, so disable SSE in
+ 32-bit libgcc functions that call it. */
+#ifndef __x86_64__
+#define LIBGCC2_UNWIND_ATTRIBUTE __attribute__((target ("no-sse")))
+#endif
+
/*
Local variables:
version-control: t
Jakub
