Hi, all,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70668
https://gcc.gnu.org/ml/gcc-patches/2016-04/msg01862.html
Thanks Stefan Reinauer to create this PR and
thanks Segher Boessenkool to fix the issue.
Now I backport the solution to gcc-6 and gcc-5 branches.
Committed as revision r244257 and r244258.
https://gcc.gnu.org/r244257
https://gcc.gnu.org/r244258
Best regards,
jasonwucj
Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog (revision 244256)
+++ gcc/ChangeLog (working copy)
@@ -1,3 +1,12 @@
+2017-01-10 Chung-Ju Wu <jasonw...@gmail.com>
+
+ Backport from mainline
+ 2016-04-28 Segher Boessenkool <seg...@kernel.crashing.org>
+
+ PR target/70668
+ * config/nds32/nds32.md (casesi): Don't access the operands array
+ out of bounds.
+
2017-01-09 Andreas Tobler <andre...@gcc.gnu.org>
Backport from mainline
Index: gcc/config/nds32/nds32.md
===================================================================
--- gcc/config/nds32/nds32.md (revision 244256)
+++ gcc/config/nds32/nds32.md (working copy)
@@ -2289,11 +2289,9 @@
emit_jump_insn (gen_cbranchsi4 (test, operands[0], operands[2],
operands[4]));
- operands[5] = gen_reg_rtx (SImode);
- /* Step C, D, E, and F, using another temporary register operands[5]. */
- emit_jump_insn (gen_casesi_internal (operands[0],
- operands[3],
- operands[5]));
+ /* Step C, D, E, and F, using another temporary register. */
+ rtx tmp = gen_reg_rtx (SImode);
+ emit_jump_insn (gen_casesi_internal (operands[0], operands[3], tmp));
DONE;
})
Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog (revision 244256)
+++ gcc/ChangeLog (working copy)
@@ -1,3 +1,12 @@
+2017-01-10 Chung-Ju Wu <jasonw...@gmail.com>
+
+ Backport from mainline
+ 2016-04-28 Segher Boessenkool <seg...@kernel.crashing.org>
+
+ PR target/70668
+ * config/nds32/nds32.md (casesi): Don't access the operands array
+ out of bounds.
+
2017-01-09 Andreas Tobler <andre...@gcc.gnu.org>
Backport from mainline
Index: gcc/config/nds32/nds32.md
===================================================================
--- gcc/config/nds32/nds32.md (revision 244256)
+++ gcc/config/nds32/nds32.md (working copy)
@@ -2288,11 +2288,9 @@
emit_jump_insn (gen_cbranchsi4 (test, operands[0], operands[2],
operands[4]));
- operands[5] = gen_reg_rtx (SImode);
- /* Step C, D, E, and F, using another temporary register operands[5]. */
- emit_jump_insn (gen_casesi_internal (operands[0],
- operands[3],
- operands[5]));
+ /* Step C, D, E, and F, using another temporary register. */
+ rtx tmp = gen_reg_rtx (SImode);
+ emit_jump_insn (gen_casesi_internal (operands[0], operands[3], tmp));
DONE;
})
