From 84d2a5509892b65ed60d39e6e2f9719e3762e40e Mon Sep 17 00:00:00 2001 From: ktkachov Date: Tue, 31 May 2016 08:29:39 +0000 Subject: [PATCH] [ARM] PR target/71056: Don't use vectorized builtins when NEON is not available PR target/71056 * config/arm/arm-builtins.c (arm_builtin_vectorized_function): Return NULL_TREE early if NEON is not available. Remove now redundant check in ARM_CHECK_BUILTIN_MODE. * gcc.target/arm/pr71056.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch@236910 138bc75d-0d04-0410-961f-82ee72b054a4 --- Upstream-Status: Backport Signed-off-by: Khem Raj gcc/ChangeLog | 7 +++++++ gcc/config/arm/arm-builtins.c | 6 +++++- gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.target/arm/pr71056.c | 32 ++++++++++++++++++++++++++++++++ 4 files changed, 49 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/arm/pr71056.c diff --git a/gcc/config/arm/arm-builtins.c b/gcc/config/arm/arm-builtins.c index 90fb40f..68b2839 100644 --- a/gcc/config/arm/arm-builtins.c +++ b/gcc/config/arm/arm-builtins.c @@ -2861,6 +2861,10 @@ arm_builtin_vectorized_function (unsigned int fn, tree type_out, tree type_in) int in_n, out_n; bool out_unsigned_p = TYPE_UNSIGNED (type_out); + /* Can't provide any vectorized builtins when we can't use NEON. */ + if (!TARGET_NEON) + return NULL_TREE; + if (TREE_CODE (type_out) != VECTOR_TYPE || TREE_CODE (type_in) != VECTOR_TYPE) return NULL_TREE; @@ -2875,7 +2879,7 @@ arm_builtin_vectorized_function (unsigned int fn, tree type_out, tree type_in) NULL_TREE is returned if no such builtin is available. */ #undef ARM_CHECK_BUILTIN_MODE #define ARM_CHECK_BUILTIN_MODE(C) \ - (TARGET_NEON && TARGET_FPU_ARMV8 \ + (TARGET_FPU_ARMV8 \ && flag_unsafe_math_optimizations \ && ARM_CHECK_BUILTIN_MODE_1 (C)) diff --git a/gcc/testsuite/gcc.target/arm/pr71056.c b/gcc/testsuite/gcc.target/arm/pr71056.c new file mode 100644 index 0000000..136754e --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/pr71056.c @@ -0,0 +1,32 @@ +/* PR target/71056. */ +/* { dg-do compile } */ +/* { dg-require-effective-target arm_vfp3_ok } */ +/* { dg-options "-O3 -mfpu=vfpv3" } */ + +/* Check that compiling for a non-NEON target doesn't try to introduce + a NEON vectorized builtin. */ + +extern char *buff; +int f2 (); +struct T1 +{ + int reserved[2]; + unsigned int ip; + unsigned short cs; + unsigned short rsrv2; +}; +void +f3 (const char *p) +{ + struct T1 x; + __builtin_memcpy (&x, p, sizeof (struct T1)); + x.reserved[0] = __builtin_bswap32 (x.reserved[0]); + x.reserved[1] = __builtin_bswap32 (x.reserved[1]); + x.ip = __builtin_bswap32 (x.ip); + x.cs = x.cs << 8 | x.cs >> 8; + x.rsrv2 = x.rsrv2 << 8 | x.rsrv2 >> 8; + if (f2 ()) + { + __builtin_memcpy (buff, "\n", 1); + } +} -- 2.9.0