[gcc r14-9010] arm: testuite: Missing optimization pattern for rev16 with thumb1

[Richard Earnshaw <rearnsha@gcc.gnu.org>]

https://gcc.gnu.org/g:2acf478bf10fc38e9cbce77ac5ecaf5abfb724b1

commit r14-9010-g2acf478bf10fc38e9cbce77ac5ecaf5abfb724b1
Author: Matthieu Longo <matthieu.longo@arm.com>
Date:   Thu Feb 8 18:13:49 2024 +0000

    arm: testuite: Missing optimization pattern for rev16 with thumb1
    
    This patch marks a rev16 test as XFAIL for architectures having only
    Thumb1 support.  The generated code is functionally correct, but the
    optimization is disabled when -mthumb is equivalent to Thumb1.  Fixing
    the root issue would requires changes that are not suitable for GCC14
    stage 4.  More information at
    https://linaro.atlassian.net/browse/GNU-1141
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/arm/rev16_2.c: XFAIL when compiled with Thumb1.

Diff:
---
 gcc/testsuite/gcc.target/arm/rev16_2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.target/arm/rev16_2.c b/gcc/testsuite/gcc.target/arm/rev16_2.c
index c6553b38a000..dff66e10bb93 100644
--- a/gcc/testsuite/gcc.target/arm/rev16_2.c
+++ b/gcc/testsuite/gcc.target/arm/rev16_2.c
@@ -17,4 +17,4 @@ __rev16_32 (__u32 x)
          | (((__u32)(x) & (__u32)0xff00ff00UL) >> 8);
 }
 
-/* { dg-final { scan-assembler-times {rev16\tr[0-9]+, r[0-9]+} 2 } } */
+/* { dg-final { scan-assembler-times {rev16\tr[0-9]+, r[0-9]+} 2 { xfail arm_thumb1_ok } } } */
\ No newline at end of file