(simplify_comparison): Convert comparison to unsigned when stripping

off a ZERO_EXTEND.

From-SVN: r8034

diff --git a/gcc/combine.c b/gcc/combine.c
index da4b2a267b62d69526b88fd6fa4e766727150b55..27875e51e5e7d8781e2f11576027dda4da823c47 100644 (file)
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -8636,6 +8636,7 @@ simplify_comparison (code, pop0, pop1)
                {
                  op0 = gen_lowpart_for_combine (tmode, inner_op0);
                  op1 = gen_lowpart_for_combine (tmode, inner_op1);
+                 code = unsigned_condition (code);
                  changed = 1;
                  break;
                }