[gcc r17-2833] AArch64: Relax regexps in tests to let them pass with -fweb

[Christopher Bazley]

https://gcc.gnu.org/g:32657f29f918712ad7110bd54d8ebb3bf6b0a2a8

commit r17-2833-g32657f29f918712ad7110bd54d8ebb3bf6b0a2a8
Author: Christopher Bazley <chris.bazley@arm.com>
Date:   Tue May 19 15:07:26 2026 +0000

    AArch64: Relax regexps in tests to let them pass with -fweb
    
    The -fweb option changes the way that GCC allocates
    registers.  -fweb is not enabled by default, so we
    have never previously noticed that some AArch64 tests
    have unreasonably strict expectations about register
    allocation.  This patch relaxes those expectations.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/aarch64/ffs.c: Relax test expectations.
            * gcc.target/aarch64/frecpe_1.c: As above.
            * gcc.target/aarch64/frecpe_2.c: As above.

Diff:
---
 gcc/testsuite/gcc.target/aarch64/ffs.c      | 20 ++++++++++----------
 gcc/testsuite/gcc.target/aarch64/frecpe_1.c |  2 +-
 gcc/testsuite/gcc.target/aarch64/frecpe_2.c |  4 ++--
 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/gcc/testsuite/gcc.target/aarch64/ffs.c b/gcc/testsuite/gcc.target/aarch64/ffs.c
index a303bee5fd47..59e55eefcc0d 100644
--- a/gcc/testsuite/gcc.target/aarch64/ffs.c
+++ b/gcc/testsuite/gcc.target/aarch64/ffs.c
@@ -9,9 +9,9 @@
 /*
 ** ffsw1:
 **	cmp	w1, 0
-**	rbit	w0, w1
-**	clz	w0, w0
-**	csinc	w0, wzr, w0, eq
+**	rbit	(w[0-9]+), w1
+**	clz	(w[0-9]+), \1
+**	csinc	w0, wzr, \2, eq
 **	ret
 */
 
@@ -23,9 +23,9 @@ int ffsw1 (int y, uint32_t x)
 /*
 ** ffsx1:
 **	cmp	x1, 0
-**	rbit	x0, x1
-**	clz	x0, x0
-**	csinc	x0, xzr, x0, eq
+**	rbit	(x[0-9]+), x1
+**	clz	(x[0-9]+), \1
+**	csinc	x0, xzr, \2, eq
 **	ret
 */
 
@@ -39,8 +39,8 @@ int ffsx1 (int y, uint64_t x)
 /*
 ** ffsw2:
 **	cmp	w1, 0
-**	ctz	w0, w1
-**	csinc	w0, wzr, w0, eq
+**	ctz	(w[0-9]+), w1
+**	csinc	w0, wzr, \1, eq
 **	ret
 */
 
@@ -52,8 +52,8 @@ int ffsw2 (int y, uint32_t x)
 /*
 ** ffsx2:
 **	cmp	x1, 0
-**	ctz	x0, x1
-**	csinc	x0, xzr, x0, eq
+**	ctz	(x[0-9]+), x1
+**	csinc	x0, xzr, \1, eq
 **	ret
 */
 
diff --git a/gcc/testsuite/gcc.target/aarch64/frecpe_1.c b/gcc/testsuite/gcc.target/aarch64/frecpe_1.c
index e79f80d3ead5..321d820a0f32 100644
--- a/gcc/testsuite/gcc.target/aarch64/frecpe_1.c
+++ b/gcc/testsuite/gcc.target/aarch64/frecpe_1.c
@@ -15,4 +15,4 @@ f2 (double x)
   return 1 / x;
 }
 
-/* { dg-final { scan-assembler {\tfrecpe\t(d[0-9]+), d0\n\tfrecps\t(d[0-9]+), \1, d0\n\tfmul\t\1, \1, \2\n\tfrecps\t\2, \1, d0\n\tfmul\td0, \1, \2\n} } } */
+/* { dg-final { scan-assembler {\tfrecpe\t(d[0-9]+), d0\n\tfrecps\t(d[0-9]+), \1, d0\n\tfmul\t(d[0-9]+), \1, \2\n\tfrecps\t(d[0-9]+), \1, d0\n\tfmul\td0, \3, \4\n} } } */
diff --git a/gcc/testsuite/gcc.target/aarch64/frecpe_2.c b/gcc/testsuite/gcc.target/aarch64/frecpe_2.c
index 233817c26b26..907181d53e7e 100644
--- a/gcc/testsuite/gcc.target/aarch64/frecpe_2.c
+++ b/gcc/testsuite/gcc.target/aarch64/frecpe_2.c
@@ -7,7 +7,7 @@ f1 (float x, float y)
   return y / x;
 }
 
-/* { dg-final { scan-assembler {\tfrecpe\t(s[0-9]+), s0\n\tfrecps\t(s[0-9]+), \1, s0\n\tfmul\t\1, \1, s1\n\tfmul\ts0, \1, \2\n} } } */
+/* { dg-final { scan-assembler {\tfrecpe\t(s[0-9]+), s0\n\tfrecps\t(s[0-9]+), \1, s0\n\tfmul\t(s[0-9]+), \1, s1\n\tfmul\ts0, \3, \2\n} } } */
 
 double
 f2 (double x, double y)
@@ -15,4 +15,4 @@ f2 (double x, double y)
   return y / x;
 }
 
-/* { dg-final { scan-assembler {\tfrecpe\t(d[0-9]+), d0\n\tfrecps\t(d[0-9]+), \1, d0\n\tfmul\t\1, \1, \2\n\tfrecps\t\2, \1, d0\n\tfmul\t\1, \1, d1\n\tfmul\td0, \1, \2\n} } } */
+/* { dg-final { scan-assembler {\tfrecpe\t(d[0-9]+), d0\n\tfrecps\t(d[0-9]+), \1, d0\n\tfmul\t(d[0-9]+), \1, \2\n\tfrecps\t(d[0-9]+), \3, d0\n\tfmul\t(d[0-9]+), \3, d1\n\tfmul\td0, \5, \4\n} } } */