(true_dependence, anti_dependence, output_dependence):

Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@12416 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 2 deletions

diff --git a/gcc/sched.c b/gcc/sched.c
index aea307f8eff..82acf33277f 100644
--- a/gcc/sched.c
+++ b/gcc/sched.c
@@ -807,11 +807,14 @@ memrefs_conflict_p (xsize, x, ysize, y, c)
    changed.  A volatile and non-volatile reference can be interchanged
    though. 
 
-   A MEM_IN_STRUCT reference at a non-QImode varying address can never
+   A MEM_IN_STRUCT reference at a non-QImode non-AND varying address can never
    conflict with a non-MEM_IN_STRUCT reference at a fixed address.   We must
    allow QImode aliasing because the ANSI C standard allows character
    pointers to alias anything.  We are assuming that characters are
-   always QImode here.  */
+   always QImode here.  We also must allow AND addresses, because they may
+   generate accesses outside the object being referenced.  This is used to
+   generate aligned addresses from unaligned addresses, for instance, the
+   alpha storeqi_unaligned pattern.  */
 
 /* Read dependence: X is read after read in MEM takes place.  There can
    only be a dependence here if both reads are volatile.  */
@@ -848,9 +851,11 @@ true_dependence (mem, x)
 				  SIZE_FOR_MODE (x), XEXP (x, 0), 0)
 	      && ! (MEM_IN_STRUCT_P (mem) && rtx_addr_varies_p (mem)
 		    && GET_MODE (mem) != QImode
+		    && GET_CODE (XEXP (mem, 0)) != AND
 		    && ! MEM_IN_STRUCT_P (x) && ! rtx_addr_varies_p (x))
 	      && ! (MEM_IN_STRUCT_P (x) && rtx_addr_varies_p (x)
 		    && GET_MODE (x) != QImode
+		    && GET_CODE (XEXP (x, 0)) != AND
 		    && ! MEM_IN_STRUCT_P (mem) && ! rtx_addr_varies_p (mem))));
 }
 
@@ -874,9 +879,11 @@ anti_dependence (mem, x)
 				  SIZE_FOR_MODE (x), XEXP (x, 0), 0)
 	      && ! (MEM_IN_STRUCT_P (mem) && rtx_addr_varies_p (mem)
 		    && GET_MODE (mem) != QImode
+		    && GET_CODE (XEXP (mem, 0)) != AND
 		    && ! MEM_IN_STRUCT_P (x) && ! rtx_addr_varies_p (x))
 	      && ! (MEM_IN_STRUCT_P (x) && rtx_addr_varies_p (x)
 		    && GET_MODE (x) != QImode
+		    && GET_CODE (XEXP (x, 0)) != AND
 		    && ! MEM_IN_STRUCT_P (mem) && ! rtx_addr_varies_p (mem))));
 }
 
@@ -894,9 +901,11 @@ output_dependence (mem, x)
 				  SIZE_FOR_MODE (x), XEXP (x, 0), 0)
 	      && ! (MEM_IN_STRUCT_P (mem) && rtx_addr_varies_p (mem)
 		    && GET_MODE (mem) != QImode
+		    && GET_CODE (XEXP (mem, 0)) != AND
 		    && ! MEM_IN_STRUCT_P (x) && ! rtx_addr_varies_p (x))
 	      && ! (MEM_IN_STRUCT_P (x) && rtx_addr_varies_p (x)
 		    && GET_MODE (x) != QImode
+		    && GET_CODE (XEXP (x, 0)) != AND
 		    && ! MEM_IN_STRUCT_P (mem) && ! rtx_addr_varies_p (mem))));
 }