On 07/14/2015 01:31 PM, Sandra Loosemore wrote:
2015-07-14 Sandra Loosemore <san...@codesourcery.com>
gcc/
* config/nios2/nios2.c (TEMP_REG_NUM): Move define up in file.
(nios2_emit_stack_limit_check): Add size parameter. Handle
-fstack-limit-symbol as well as -fstack-limit-register.
(nios2_expand_prologue): Emit only a single stack limit check,
even if multiple stack adjustments are required.
(nios2_option_override): Diagnose unsupported combination of -fpic
and -stack-limit-symbol.
gcc/testsuite/
* gcc.target/nios2/nios2-stack-check-1.c: Adjust patterns.
* gcc.target/nios2/nios2-stack-check-2.c: Likewise.
* gcc.target/nios2/nios2-stack-check-3.c: New test case.
Ooops -- this patch caused a possibly-uninitialized-variable
warning.(Mainline compiles had been very noisy with other random
warnings while I was working on this, and it was easy to overlook one
more warning....)
Anyway, fixed now with this followup patch.
-Sandra
2015-07-16 Sandra Loosemore <san...@codesourcery.com>
gcc/
* config/nios2/nios2.c (nios2_emit_stack_limit_check): Fix
uninitialized-variable warning.
Index: gcc/config/nios2/nios2.c
===================================================================
--- gcc/config/nios2/nios2.c (revision 225856)
+++ gcc/config/nios2/nios2.c (working copy)
@@ -563,7 +563,7 @@ nios2_create_cfa_notes (rtx_insn *insn,
static void
nios2_emit_stack_limit_check (int size)
{
- rtx sum;
+ rtx sum = NULL_RTX;
if (GET_CODE (stack_limit_rtx) == SYMBOL_REF)
{
