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Fix linux kernel miscompilation.

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PR target/17455
* config/ia64/ia64.c (ia64_function_ok_for_sibcall): Return false
if current_function_decl is a sibcall.

From-SVN: r87574
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James E Wilson 2004-09-15 23:26:33 +00:00 committed by Jim Wilson
parent 04a7518894
commit 097f3d486a
2 changed files with 12 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2004-09-15 James E Wilson <wilson@specifixinc.com>
PR target/17455
* config/ia64/ia64.c (ia64_function_ok_for_sibcall): Return false
if current_function_decl is a sibcall.
2004-09-15 Mark Mitchell <mark@codesourcery.com> 2004-09-15 Mark Mitchell <mark@codesourcery.com>
* varasm.c (default_function_rdodata_section): Make sure to pass * varasm.c (default_function_rdodata_section): Make sure to pass

6
gcc/config/ia64/ia64.c
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@ -3367,6 +3367,12 @@ ia64_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
static bool static bool
ia64_function_ok_for_sibcall (tree decl, tree exp ATTRIBUTE_UNUSED) ia64_function_ok_for_sibcall (tree decl, tree exp ATTRIBUTE_UNUSED)
{ {
/* We can't perform a sibcall if the current function has the syscall_linkage
attribute. */
if (lookup_attribute ("syscall_linkage",
TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl))))
return false;
/* We must always return with our current GP. This means we can /* We must always return with our current GP. This means we can
only sibcall to functions defined in the current module. */ only sibcall to functions defined in the current module. */
return decl && (*targetm.binds_local_p) (decl); return decl && (*targetm.binds_local_p) (decl);