From 71aa66e4fd514cbb6dea13f17374ed2f0bba88a4 Mon Sep 17 00:00:00 2001 From: Kyrylo Tkachov Date: Thu, 6 Dec 2012 10:07:41 +0000 Subject: [PATCH] sourcebuild.texi: Document arm_v8_neon_ok. 2012-12-06 Kyrylo Tkachov gcc/ * doc/sourcebuild.texi: Document arm_v8_neon_ok. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_arm_v8_neon_ok): New procedure. (add_options_for_arm_v8_neon): Likewise. From-SVN: r194245 --- gcc/ChangeLog | 4 ++++ gcc/doc/sourcebuild.texi | 4 ++++ gcc/testsuite/ChangeLog | 6 ++++++ gcc/testsuite/lib/target-supports.exp | 23 +++++++++++++++++++++++ 4 files changed, 37 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f5ca6e4d360..9d87b558656 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2012-12-06 Kyrylo Tkachov + + * doc/sourcebuild.texi: Document arm_v8_neon_ok. + 2012-12-06 Kyrylo Tkachov * config/arm/arm.c (neon_itype): Define NEON_RINT enum element. diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index 0f29326690f..ae0568132c0 100644 --- a/gcc/doc/sourcebuild.texi +++ b/gcc/doc/sourcebuild.texi @@ -1560,6 +1560,10 @@ Some multilibs may be incompatible with these options. ARM target supports @code{-mfpu=fp-armv8 -mfloat-abi=softfp}. Some multilibs may be incompatible with these options. +@item arm_v8_neon_ok +ARM target supports @code{-mfpu=neon-fp-armv8 -mfloat-abi=softfp}. +Some multilibs may be incompatible with these options. + @item arm_prefer_ldrd_strd ARM target prefers @code{LDRD} and @code{STRD} instructions over @code{LDM} and @code{STM} instructions. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 30df45eae59..f89fe3c5026 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2012-12-06 Kyrylo Tkachov + + * lib/target-supports.exp (check_effective_target_arm_v8_neon_ok): + New procedure. + (add_options_for_arm_v8_neon): Likewise. + 2012-12-05 Steven Bosscher * g++.dg/pr55604.C: New test. diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index 5e830b10277..ef93ad1f56f 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -2107,6 +2107,22 @@ proc check_effective_target_arm_v8_vfp_ok {} { } } +# Return 1 if this is an ARM target supporting -mfpu=neon-fp-armv8 +# -mfloat-abi=softfp +proc check_effective_target_arm_v8_neon_ok {} { + if { [check_effective_target_arm32] } { + return [check_no_compiler_messages arm_v8_neon_ok object { + int foo (void) + { + __asm__ volatile ("vrintn.f32 q0, q0"); + return 0; + } + } "-mfpu=neon-fp-armv8 -mfloat-abi=softfp"] + } else { + return 0 + } +} + # Return 1 if this is an ARM target supporting -mfpu=vfp # -mfloat-abi=hard. Some multilibs may be incompatible with these # options. @@ -2166,6 +2182,13 @@ proc add_options_for_arm_v8_vfp { flags } { return "$flags -mfpu=fp-armv8 -mfloat-abi=softfp" } +proc add_options_for_arm_v8_neon { flags } { + if { ! [check_effective_target_arm_v8_neon_ok] } { + return "$flags" + } + return "$flags -mfpu=neon-fp-armv8 -mfloat-abi=softfp" +} + # Add the options needed for NEON. We need either -mfloat-abi=softfp # or -mfloat-abi=hard, but if one is already specified by the # multilib, use it. Similarly, if a -mfpu option already enables