From: Julian Seward <jseward@acm.org>
Date: Wed, 28 Jul 2004 07:12:30 +0000 (+0000)
Subject: Fix bug in allocation of vregs for 64-bit IRTemps.
X-Git-Tag: svn/VALGRIND_3_0_1^2~1186
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=985a06f874c6ed4ddb9e95da2af172951ca414f4;p=thirdparty%2Fvalgrind.git

Fix bug in allocation of vregs for 64-bit IRTemps.


git-svn-id: svn://svn.valgrind.org/vex/trunk@148
---

diff --git a/VEX/priv/host-generic/reg_alloc.c b/VEX/priv/host-generic/reg_alloc.c
index 903f876487..30158a08b1 100644
--- a/VEX/priv/host-generic/reg_alloc.c
+++ b/VEX/priv/host-generic/reg_alloc.c
@@ -320,8 +320,13 @@ HInstrArray* doRegisterAllocation (
          if (!hregIsVirtual(vreg))
             continue;
          k = hregNumber(vreg);
-         if (k < 0 || k >= n_vregs)
+         if (k < 0 || k >= n_vregs) {
+            vex_printf("\n");
+            (*ppInstr)(instrs_in->arr[ii]);
+            vex_printf("\n");
+            vex_printf("vreg %d, n_vregs %d\n", k, n_vregs);
             vpanic("doRegisterAllocation: out-of-range vreg");
+         }
 
          /* Take the opportunity to note its regclass.  We'll need
             that when allocating spill slots. */
diff --git a/VEX/priv/host-x86/isel.c b/VEX/priv/host-x86/isel.c
index fe904f8144..50e7796dbf 100644
--- a/VEX/priv/host-x86/isel.c
+++ b/VEX/priv/host-x86/isel.c
@@ -1022,7 +1022,7 @@ HInstrArray* iselBB_X86 ( IRBB* bb, Addr64(*find_helper)(Char*) )
       env->vregmap[i]   = hreg;
       env->vregmapHI[i] = hregHI;
    }
-   env->vreg_ctr = env->n_vregmap;
+   env->vreg_ctr = j;
 
    /* Ok, finally we can iterate over the statements. */
    for (stmt = bb->stmts; stmt; stmt=stmt->link)