| From 84d2a5509892b65ed60d39e6e2f9719e3762e40e Mon Sep 17 00:00:00 2001 |
| From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> |
| 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 <raj.khem@gmail.com> |
| |
| 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 |
| |