Hi,
GET_MODE returns VOIDmode on CONST_INT. It happens with -O0. This
patch uses counter_mode on count_exp to get mode. Tested on
Linux/x86-64 without regressions. OK for trunk and 4.9 branch?
Thanks.
H.J.
---
gcc/
2014-04-17 H.J. Lu hongjiu...@intel.com
PR target/60868
* config/i386/i386.c (ix86_expand_set_or_movmem): Call counter_mode
on count_exp to get mode.
gcc/testsuite/
2014-04-17 H.J. Lu hongjiu...@intel.com
PR target/60868
* gcc.target/i386/pr60868.c: New testcase.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 536f50f..7a68623 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -24392,7 +24392,8 @@ ix86_expand_set_or_movmem (rtx dst, rtx src, rtx
count_exp, rtx val_exp,
if (jump_around_label == NULL_RTX)
jump_around_label = gen_label_rtx ();
emit_cmp_and_jump_insns (count_exp, GEN_INT (dynamic_check - 1),
- LEU, 0, GET_MODE (count_exp), 1, hot_label);
+ LEU, 0, counter_mode (count_exp),
+ 1, hot_label);
predict_jump (REG_BR_PROB_BASE * 90 / 100);
if (issetmem)
set_storage_via_libcall (dst, count_exp, val_exp, false);
diff --git a/gcc/testsuite/gcc.target/i386/pr60868.c
b/gcc/testsuite/gcc.target/i386/pr60868.c
new file mode 100644
index 000..c30bbfc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr60868.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options -O0 -minline-all-stringops -minline-stringops-dynamically
-march=core2 } */
+
+void bar (float *);
+
+void foo (void)
+{
+ float b[256] = {0};
+ bar(b);
+}