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-rw-r--r--gcc/ChangeLog3
-rw-r--r--gcc/combine.c9
2 files changed, 8 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e5f0c46..c6d729f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
2014-11-04 Bernd Schmidt <bernds@codesourcery.com>
+ * combine.c (combine_simplify_rtx): In STORE_FLAG_VALUE == -1 case,
+ also verify that mode is equal to the mode of op0.
+
* bb-reorder.c (get_uncond_jump_length): Avoid using delete_insn,
emit into a sequence instead.
diff --git a/gcc/combine.c b/gcc/combine.c
index 40f2875..e240cfb 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -5811,10 +5811,11 @@ combine_simplify_rtx (rtx x, machine_mode op0_mode, int in_dest,
;
else if (STORE_FLAG_VALUE == -1
- && new_code == NE && GET_MODE_CLASS (mode) == MODE_INT
- && op1 == const0_rtx
- && (num_sign_bit_copies (op0, mode)
- == GET_MODE_PRECISION (mode)))
+ && new_code == NE && GET_MODE_CLASS (mode) == MODE_INT
+ && op1 == const0_rtx
+ && mode == GET_MODE (op0)
+ && (num_sign_bit_copies (op0, mode)
+ == GET_MODE_PRECISION (mode)))
return gen_lowpart (mode,
expand_compound_operation (op0));