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[X86] Test for MACH-O before HAVE_AS_GOTOFF_IN_DATA

Message ID BC060955-537C-4169-94BE-C50A81CDC95E@sandoe.co.uk
State New
Headers show
Series [X86] Test for MACH-O before HAVE_AS_GOTOFF_IN_DATA | expand

Commit Message

Iain Sandoe Aug. 18, 2018, 12:40 p.m. UTC
Hi,

If we use an assembler which supports HAVE_AS_GOTOFF_IN_DATA,
(e.g. a modern GAS) on Darwin, we produce wrong code because the
gotoff-in-data test is conducted before the mach-o case.

This should be a no-op on non-Darwin targets, since the Darwin test is guarded
on #ifdef TARGET_MACHO.

Bootstrapped on x86_64-linux-gnu (with 32 multilib) and on x86_64-apple-darwin10 and 16.

OK for trunk?
Iain

gcc/

	* config/i386/i386.c (ix86_output_addr_diff_elt): Move the MACH-O
	specific test before the one for HAVE_AS_GOTOFF_IN_DATA.


---
 gcc/config/i386/i386.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Richard Biener Aug. 18, 2018, 3:02 p.m. UTC | #1
On August 18, 2018 2:40:01 PM GMT+02:00, Iain Sandoe <iain@sandoe.co.uk> wrote:
>Hi,
>
>If we use an assembler which supports HAVE_AS_GOTOFF_IN_DATA,
>(e.g. a modern GAS) on Darwin, we produce wrong code because the
>gotoff-in-data test is conducted before the mach-o case.
>
>This should be a no-op on non-Darwin targets, since the Darwin test is
>guarded
>on #ifdef TARGET_MACHO.
>
>Bootstrapped on x86_64-linux-gnu (with 32 multilib) and on
>x86_64-apple-darwin10 and 16.
>
>OK for trunk?

OK. 

Richard. 

>Iain
>
>gcc/
>
>	* config/i386/i386.c (ix86_output_addr_diff_elt): Move the MACH-O
>	specific test before the one for HAVE_AS_GOTOFF_IN_DATA.
>
>
>---
> gcc/config/i386/i386.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
>diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
>index 3548de2169..9c8a1f0ee9 100644
>--- a/gcc/config/i386/i386.c
>+++ b/gcc/config/i386/i386.c
>@@ -19768,8 +19768,6 @@ ix86_output_addr_diff_elt (FILE *file, int
>value, int rel)
>   if (TARGET_64BIT || TARGET_VXWORKS_RTP)
>     fprintf (file, "%s%s%d-%s%d\n",
> 	     directive, LPREFIX, value, LPREFIX, rel);
>-  else if (HAVE_AS_GOTOFF_IN_DATA)
>-    fprintf (file, ASM_LONG "%s%d@GOTOFF\n", LPREFIX, value);
> #if TARGET_MACHO
>   else if (TARGET_MACHO)
>     {
>@@ -19778,6 +19776,8 @@ ix86_output_addr_diff_elt (FILE *file, int
>value, int rel)
>       putc ('\n', file);
>     }
> #endif
>+  else if (HAVE_AS_GOTOFF_IN_DATA)
>+    fprintf (file, ASM_LONG "%s%d@GOTOFF\n", LPREFIX, value);
>   else
>     asm_fprintf (file, ASM_LONG "%U%s+[.-%s%d]\n",
> 		 GOT_SYMBOL_NAME, LPREFIX, value);
diff mbox series

Patch

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 3548de2169..9c8a1f0ee9 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -19768,8 +19768,6 @@  ix86_output_addr_diff_elt (FILE *file, int value, int rel)
   if (TARGET_64BIT || TARGET_VXWORKS_RTP)
     fprintf (file, "%s%s%d-%s%d\n",
 	     directive, LPREFIX, value, LPREFIX, rel);
-  else if (HAVE_AS_GOTOFF_IN_DATA)
-    fprintf (file, ASM_LONG "%s%d@GOTOFF\n", LPREFIX, value);
 #if TARGET_MACHO
   else if (TARGET_MACHO)
     {
@@ -19778,6 +19776,8 @@  ix86_output_addr_diff_elt (FILE *file, int value, int rel)
       putc ('\n', file);
     }
 #endif
+  else if (HAVE_AS_GOTOFF_IN_DATA)
+    fprintf (file, ASM_LONG "%s%d@GOTOFF\n", LPREFIX, value);
   else
     asm_fprintf (file, ASM_LONG "%U%s+[.-%s%d]\n",
 		 GOT_SYMBOL_NAME, LPREFIX, value);