[gcc r12-3242] Fix x86/56337 : 1<<28 alignment is broken

[gcc r12-3242] Fix x86/56337 : 1<<28 alignment is broken

[Andrew Pinski]

https://gcc.gnu.org/g:e4d86078881bb7bb57bc6e68c22211707d2b3dc7

commit r12-3242-ge4d86078881bb7bb57bc6e68c22211707d2b3dc7
Author: Andrew Pinski <apinski@marvell.com>
Date:   Fri Jul 23 17:21:06 2021 +0000

    Fix x86/56337 : 1<<28 alignment is broken
    
    The problem here is the x86_64 back-end uses a signed integer
    for alignment and then divides by BITS_PER_UNIT so if we had
    INT_MIN (which is what 1<<28*8 is), we would get the wrong result.
    
    This fixes the problem by using unsigned for the argument to
    x86_output_aligned_bss and x86_output_aligned_bss.
    
    OK? Bootstrapped and tested on x86_64-linux-gnu.
    
    gcc/ChangeLog:
    
            PR target/56337
            * config/i386/i386-protos.h (x86_output_aligned_bss):
            Change align argument to unsigned type.
            (x86_elf_aligned_decl_common): Likewise.
            * config/i386/i386.c (x86_elf_aligned_decl_common): Likewise.
            (x86_output_aligned_bss): Likewise.

Diff:
---
 gcc/config/i386/i386-protos.h | 4 ++--
 gcc/config/i386/i386.c        | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index 2fd13074c81..355df116439 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -326,9 +326,9 @@ struct ix86_address
 extern int ix86_decompose_address (rtx, struct ix86_address *);
 extern int memory_address_length (rtx, bool);
 extern void x86_output_aligned_bss (FILE *, tree, const char *,
-				    unsigned HOST_WIDE_INT, int);
+				    unsigned HOST_WIDE_INT, unsigned);
 extern void x86_elf_aligned_decl_common (FILE *, tree, const char *,
-					 unsigned HOST_WIDE_INT, int);
+					 unsigned HOST_WIDE_INT, unsigned);
 
 #ifdef RTX_CODE
 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *,
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 3bb2cab57a3..4681b667fa2 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -841,7 +841,7 @@ x86_64_elf_unique_section (tree decl, int reloc)
 void
 x86_elf_aligned_decl_common (FILE *file, tree decl,
 			const char *name, unsigned HOST_WIDE_INT size,
-			int align)
+			unsigned align)
 {
   if ((ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_MEDIUM_PIC)
       && size > (unsigned int)ix86_section_threshold)
@@ -862,7 +862,7 @@ x86_elf_aligned_decl_common (FILE *file, tree decl,
 
 void
 x86_output_aligned_bss (FILE *file, tree decl, const char *name,
-		       	unsigned HOST_WIDE_INT size, int align)
+		       	unsigned HOST_WIDE_INT size, unsigned align)
 {
   if ((ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_MEDIUM_PIC)
       && size > (unsigned int)ix86_section_threshold)