i386.c (ix86_decompose_address): Verify the base is a REG before trying to examine...

        * i386.c (ix86_decompose_address): Verify the base is a REG
        before trying to examine its register number.

From-SVN: r30536

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ca68fd2a2808bf14af5a9947189a5829f085566c..95c2c773d5552b68079db1a8d7f9ac9f7c2cf98a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 Sun Nov 14 23:11:05 1999  Jeffrey A Law  (law@cygnus.com)
 
+       * i386.c (ix86_decompose_address): Verify the base is a REG
+       before trying to examine its register number.
+
        * basic-block.h: Remove all #defines and prototypes related to
        integer lists.
        (free_bb_mem, compute_preds_succs): Remove prototype.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 090196002432af82c52eafe0b940ba09504ea045..92289705f11cae44e6c9719e22ec684d3165ceb1 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -1828,6 +1828,7 @@ ix86_decompose_address (addr, out)
      Avoid this by transforming to [%esi+0].  */
   if (ix86_cpu == PROCESSOR_K6 && !optimize_size
       && base && !index && !disp
+      && REG_P (base)
       && REGNO_REG_CLASS (REGNO (base)) == SIREG)
     disp = const0_rtx;