Fix PR tree-optimization/32583 Fix PR tree-optimization/32584

2007-07-02  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR tree-optimization/32583
	Fix PR tree-optimization/32584
	* tree-ssa-pre.c (phi_translate): Always pass seen bitmap.
	(phi_translate_set): Use phi_translate directly now.
	(make_values_for_stmt): Don't value number RHS if we already know
	it is constant.

From-SVN: r126222

gcc/ChangeLog

+2007-07-02  Daniel Berlin  <dberlin@dberlin.org>
+
+	Fix PR tree-optimization/32583
+	Fix PR tree-optimization/32584
+	* tree-ssa-pre.c (phi_translate): Always pass seen bitmap.
+	(phi_translate_set): Use phi_translate directly now.
+	(make_values_for_stmt): Don't value number RHS if we already know
+	it is constant.
+
 2007-07-02  Steve Ellcey  <sje@cup.hp.com>
 	    Jim Wilson <wilson@specifix.com>
 

gcc/testsuite/ChangeLog

+2007-07-02  Daniel Berlin  <dberlin@dberlin.org>
+
+	* gfortran.fortran-torture/compile/pr32583.f: New.
+	* gcc.c-torture/compile/pr32584.c: New
+
 2007-07-02  Ollie Wild  <aaw@google.com>
 
 	* g++.dg/lookup/using16.C: Merge dg-errors with common line.

gcc/testsuite/gcc.c-torture/compile/pr32584.c

+typedef long unsigned int size_t;
+typedef long int __ssize_t;
+typedef struct
+{
+} __mbstate_t;
+typedef struct
+{
+} _G_fpos64_t;
+enum
+{
+  __GCONV_INTERNAL_ERROR
+};
+typedef int (*__gconv_trans_fct) (struct __gconv_step *,
+      size_t *);
+typedef int (*__gconv_trans_context_fct) (void *, __const unsigned char *,
+       unsigned char *, unsigned char *);
+struct __gconv_trans_data
+{
+};
+struct _IO_marker {
+};
+typedef __ssize_t __io_write_fn (void *__cookie, __const char *__buf,
+     size_t __n);
+typedef struct blockbox {
+} *BBOXPTR, BBOX ;
+typedef struct netbox {
+} *NBOXPTR, NBOX ;
+typedef struct termbox {
+    struct termbox *nextterm ;
+} *TEBOXPTR, TEBOX ;
+typedef struct tilebox {
+    TEBOXPTR termsptr ;
+}
+*TIBOXPTR ,
+TIBOX ;
+typedef struct cellbox {
+    TIBOXPTR tileptr ;
+}
+*CBOXPTR ,
+CBOX ;
+typedef struct dimbox {
+}
+DBOX ;
+typedef struct rowbox {
+} ROWBOX ;
+typedef struct binbox {
+}
+CHANGRDBOX ;
+extern int numcells ;
+extern int numterms ;
+sortpin()
+{
+int j , n , cell ;
+CBOXPTR ptr ;
+TIBOXPTR tile ;
+TEBOXPTR term , *xpptr ;
+for( cell = 1 ; cell <= numcells + numterms ; cell++ ) {
+    if( ( tile = ptr->tileptr ) == (TIBOXPTR) ((void *)0) ) {
+    }
+    n = 0 ;
+    for( term = tile->termsptr ; term != (TEBOXPTR) ((void *)0) ;
+      term = term->nextterm ) {
+ xpptr[ ++n ] = term ;
+    }
+    xpptr[ n + 1 ] = (TEBOXPTR) ((void *)0) ;
+    ptr->tileptr->termsptr = xpptr[ 1 ] ;
+    for( j = 1 ; j <= n ; j++ ) {
+    }
+}
+}
+

gcc/testsuite/gfortran.fortran-torture/compile/pr32583.f

+      subroutine detune(iv,ekk,ep,beta,dtu,dtup,dfac)
+      implicit real*8 (a-h,o-z)
+      parameter(npart=64,nmac=1)
+      parameter(nele=700,nblo=300,nper=16,
+     &nelb=100,nblz=20000,nzfz=300000,mmul=11)
+      parameter(nran=280000,ncom=100,mran=500,mpa=6,nrco=5,nema=15)
+      parameter(mcor=10)
+      parameter(npos=20000,nlya=10000,ninv=1000,nplo=20000)
+      parameter(nmon1=600,ncor1=600)
+      parameter(pieni=1d-17)
+      parameter(zero=0.0d0,half=0.5d0,one=1.0d0)
+      parameter(two=2.0d0,three=3.0d0,four=4.0d0)
+      dimension dfac(10),dtu(2,5),ep(2),beta(2),dtup(2,5,0:4,0:4)
+      save
+      pi=four*atan(one)
+      iv2=2*iv
+      iv3=iv+1
+      vtu1=-ekk*(half**iv2)*dfac(iv2)/pi
+      dtu1=zero
+      dtu2=zero
+      do 10 iv4=1,iv3
+        iv5=iv4-1
+        iv6=iv-iv5
+        vor=one
+        if(mod(iv6,2).ne.0) vor=-one
+        vtu2=vor/(dfac(iv5+1)**2)/(dfac(iv6+1)**2)*(beta(1)**iv5)* (beta
+     +  (2)**iv6)
+        if(iv5.ne.0) then
+          dtu1=dtu1+vtu2*iv5*(ep(1)**(iv5-1))*(ep(2)**iv6)
+          dtup(1,iv,iv5-1,iv6)=dtup(1,iv,iv5-1,iv6)+vtu2*iv5*vtu1
+        endif
+        if(iv6.ne.0) then
+          dtu2=dtu2+vtu2*iv6*(ep(1)**iv5)*(ep(2)**(iv6-1))
+          dtup(2,iv,iv5,iv6-1)=dtup(2,iv,iv5,iv6-1)+vtu2*iv6*vtu1
+        endif
+   10 continue
+      dtu(1,iv)=dtu(1,iv)+vtu1*dtu1
+      dtu(2,iv)=dtu(2,iv)+vtu1*dtu2
+      return
+      end

gcc/tree-ssa-pre.c

@@ -1322,6 +1322,7 @@ phi_translate_1 (tree expr, bitmap_set_t set1, bitmap_set_t set2,
       gcc_unreachable ();
     }
 }
+
 /* Translate EXPR using phis in PHIBLOCK, so that it has the values of
    the phis in PRED. 
    Return NULL if we can't find a leader for each part of the
@@ -1331,7 +1332,9 @@ static tree
 phi_translate (tree expr, bitmap_set_t set1, bitmap_set_t set2,
 	       basic_block pred, basic_block phiblock)
 {
-  return phi_translate_1 (expr, set1, set2, pred, phiblock, NULL);
+  bitmap_clear (seen_during_translate);
+  return phi_translate_1 (expr, set1, set2, pred, phiblock,
+			  seen_during_translate);
 }
 
 /* For each expression in SET, translate the value handles through phi nodes
@@ -1356,9 +1359,7 @@ phi_translate_set (bitmap_set_t dest, bitmap_set_t set, basic_block pred,
   for (i = 0; VEC_iterate (tree, exprs, i, expr); i++)
     {
       tree translated;
-      bitmap_clear (seen_during_translate);
-      translated = phi_translate_1 (expr, set, NULL, pred, phiblock,
-				    seen_during_translate);
+      translated = phi_translate (expr, set, NULL, pred, phiblock);
 
       /* Don't add constants or empty translations to the cache, since
 	 we won't look them up that way, or use the result, anyway.  */
@@ -3404,7 +3405,8 @@ make_values_for_stmt (tree stmt, basic_block block)
   lhsval = valvh ? valvh : get_value_handle (lhs);
   
   STRIP_USELESS_TYPE_CONVERSION (rhs);
-  if (can_value_number_operation (rhs))
+  if (can_value_number_operation (rhs)
+      && (!lhsval || !is_gimple_min_invariant (lhsval)))
     {
       /* For value numberable operation, create a
 	 duplicate expression with the operands replaced