[AArch64, testsuite] gcc.target/aarch64/extend.c: xfails for ilp32

[Charles Baylis]

In ILP32, GCC fails to merge pointer arithmetic into the addressing
mode of a load instruction, as
        add     w0, w0, w1, lsl 2
        ldr     w0, [x0]
is not equivalent to:
        ldr      w0, [x0, w1, lsl 2]

Shows the expected FAIL->XFAILs on aarch64-linux-gnu_ilp32, no
regressions on aarch64-linux-gnu.

gcc/testsuite:
<date>  Charles Baylis  <charles.bay...@linaro.org>

        * gcc.target/aarch64/extend.c (ldr_uxtw): Add xfail for ilp32.
        (ldr_uxtw0): Likewise.
        (ldr_sxtw): Likewise.
        (ldr_sxtw0): Likewise.

From 70d43eb4f783d434e7996ebdde40b4ffea4a4a20 Mon Sep 17 00:00:00 2001
From: Charles Baylis <charles.bay...@linaro.org>
Date: Tue, 24 Oct 2017 14:22:11 +0100
Subject: [PATCH 2/4] [AArch64] gcc.target/aarch64/extend.c: xfails for ilp32

<date>  Charles Baylis  <charles.bay...@linaro.org>

        * gcc.target/aarch64/extend.c (ldr_uxtw): Add xfail for ilp32.
        (ldr_uxtw0): Likewise.
        (ldr_sxtw): Likewise.
        (ldr_sxtw0): Likewise.
---
 gcc/testsuite/gcc.target/aarch64/extend.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/testsuite/gcc.target/aarch64/extend.c b/gcc/testsuite/gcc.target/aarch64/extend.c
index f399e55..a9eb852 100644
--- a/gcc/testsuite/gcc.target/aarch64/extend.c
+++ b/gcc/testsuite/gcc.target/aarch64/extend.c
@@ -4,28 +4,28 @@
 int
 ldr_uxtw (int *arr, unsigned int i)
 {
-  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*uxtw #?2]" } } */
+  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*uxtw #?2]" { xfail { aarch64*-*-* && ilp32 } } } } */
   return arr[i];
 }
 
 int
 ldr_uxtw0 (char *arr, unsigned int i)
 {
-  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*uxtw]" } } */
+  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*uxtw]" { xfail { aarch64*-*-* && ilp32 } } } } */
   return arr[i];
 }
 
 int
 ldr_sxtw (int *arr, int i)
 {
-  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*sxtw #?2]" } } */
+  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*sxtw #?2]" { xfail { aarch64*-*-* && ilp32 } } } } */
   return arr[i];
 }
 
 int
 ldr_sxtw0 (char *arr, int i)
 {
-  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*sxtw]" } } */
+  /* { dg-final { scan-assembler "ldr\tw\[0-9\]+,.*sxtw]" { xfail { aarch64*-*-* && ilp32 } } } } */
   return arr[i];
 }
 
-- 
2.7.4