[gcc r11-4992] MSP430: Skip index-1.c test

[Jozef Lawrynowicz]

https://gcc.gnu.org/g:a514934a0565255276adaa4fbd4aa35579ec33c6

commit r11-4992-ga514934a0565255276adaa4fbd4aa35579ec33c6
Author: Jozef Lawrynowicz <jozef.l@mittosystems.com>
Date:   Fri Nov 13 15:36:01 2020 +0000

    MSP430: Skip index-1.c test
    
    To access the "n - 100000"th element of "a" in this test, GCC will
    generate the following code for msp430-elf with -mcpu=msp430x:
    
      RLAM.W  #1, R12
      MOV.W a-3392(R12), R12
    
    Since there aren't actually 100,000 elements in a, this means that
    "a-3392" offset calculated by the linker can overflow, as the address of
    "a" can validly be less than 3392.
    
    The relocations used for -mcpu=msp430 and -mlarge are not as strict and
    the calculated value is allowed to wrap around the address space,
    avoiding relocation overflows.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.c-torture/execute/index-1.c: Skip for the default MSP430 430X ISA.

Diff:
---
 gcc/testsuite/gcc.c-torture/execute/index-1.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/testsuite/gcc.c-torture/execute/index-1.c b/gcc/testsuite/gcc.c-torture/execute/index-1.c
index b00090d834a..d96be4c77b8 100644
--- a/gcc/testsuite/gcc.c-torture/execute/index-1.c
+++ b/gcc/testsuite/gcc.c-torture/execute/index-1.c
@@ -1,3 +1,5 @@
+/* { dg-skip-if "strict reloc overflow checking" { msp430-*-* } { "*" } { "-mcpu=msp430" "-mlarge"} } */
+
 int a[] =
 {
   0,  1,  2,  3,  4,  5,  6,  7,  8,  9,