Alpha does not narrow memory comparisons in combine, so the
"narrow comparison from mode .I to HI" scan never matches. This is not
specific to byte/word memory access: -mbwx does not change it either.
Skip these tests the same way sparc and hppa already do.
gcc/testsuite/ChangeLog:
* gcc.dg/cmp-mem-const-3.c: Skip on alpha.
* gcc.dg/cmp-mem-const-4.c: Likewise.
* gcc.dg/cmp-mem-const-5.c: Likewise.
* gcc.dg/cmp-mem-const-6.c: Likewise.
---
gcc/testsuite/gcc.dg/cmp-mem-const-3.c | 3 ++-
gcc/testsuite/gcc.dg/cmp-mem-const-4.c | 3 ++-
gcc/testsuite/gcc.dg/cmp-mem-const-5.c | 3 ++-
gcc/testsuite/gcc.dg/cmp-mem-const-6.c | 3 ++-
4 files changed, 8 insertions(+), 4 deletions(-)
diff --git ./gcc/testsuite/gcc.dg/cmp-mem-const-3.c
./gcc/testsuite/gcc.dg/cmp-mem-const-3.c
index 5469f10712e..bd19ffeb16c 100644
--- ./gcc/testsuite/gcc.dg/cmp-mem-const-3.c
+++ ./gcc/testsuite/gcc.dg/cmp-mem-const-3.c
@@ -1,6 +1,7 @@
-/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* } } } } } */
+/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* alpha*-*-* }
} } } } */
/* Excluding sparc since there we do not end up with a comparison of memory and
a constant which means that the optimization is not applicable. */
+/* Excluding alpha since memory comparisons are not narrowed there. */
/* { dg-options "-O2 -fdump-rtl-combine-details" } */
/* { dg-final { scan-rtl-dump "narrow comparison from mode .I to HI" "combine"
} } */
diff --git ./gcc/testsuite/gcc.dg/cmp-mem-const-4.c
./gcc/testsuite/gcc.dg/cmp-mem-const-4.c
index 9ea094e20eb..ff318e513ef 100644
--- ./gcc/testsuite/gcc.dg/cmp-mem-const-4.c
+++ ./gcc/testsuite/gcc.dg/cmp-mem-const-4.c
@@ -1,6 +1,7 @@
-/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* } } } } } */
+/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* alpha*-*-* }
} } } } */
/* Excluding sparc since there we do not end up with a comparison of memory and
a constant which means that the optimization is not applicable. */
+/* Excluding alpha since memory comparisons are not narrowed there. */
/* { dg-options "-O2 -fdump-rtl-combine-details" } */
/* { dg-final { scan-rtl-dump "narrow comparison from mode .I to HI" "combine"
} } */
diff --git ./gcc/testsuite/gcc.dg/cmp-mem-const-5.c
./gcc/testsuite/gcc.dg/cmp-mem-const-5.c
index 5a9096ef84d..1e3d530b99e 100644
--- ./gcc/testsuite/gcc.dg/cmp-mem-const-5.c
+++ ./gcc/testsuite/gcc.dg/cmp-mem-const-5.c
@@ -1,6 +1,7 @@
-/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* } } } } } */
+/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* alpha*-*-* }
} } } } */
/* Excluding sparc since there a prior optimization already reduced the
constant, i.e., nothing left for us. */
+/* Excluding alpha since memory comparisons are not narrowed there. */
/* { dg-options "-O2 -fdump-rtl-combine-details" } */
/* { dg-final { scan-rtl-dump "narrow comparison from mode .I to SI" "combine"
} } */
diff --git ./gcc/testsuite/gcc.dg/cmp-mem-const-6.c
./gcc/testsuite/gcc.dg/cmp-mem-const-6.c
index 381195361e0..c1d0124f9d2 100644
--- ./gcc/testsuite/gcc.dg/cmp-mem-const-6.c
+++ ./gcc/testsuite/gcc.dg/cmp-mem-const-6.c
@@ -1,6 +1,7 @@
-/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* } } } } } */
+/* { dg-do compile { target { lp64 && { ! { sparc*-*-* hppa*-*-* alpha*-*-* }
} } } } */
/* Excluding sparc since there a prior optimization already reduced the
constant, i.e., nothing left for us. */
+/* Excluding alpha since memory comparisons are not narrowed there. */
/* { dg-options "-O2 -fdump-rtl-combine-details" } */
/* { dg-final { scan-rtl-dump "narrow comparison from mode .I to SI" "combine"
} } */
--
2.54.0
