From patchwork Wed Dec 19 15:59:55 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Lyon X-Patchwork-Id: 207434 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) by ozlabs.org (Postfix) with SMTP id BCFCE2C007A for ; Thu, 20 Dec 2012 03:00:19 +1100 (EST) Comment: DKIM? See http://www.dkim.org DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=gcc.gnu.org; s=default; x=1356537620; h=Comment: DomainKey-Signature:Received:Received:Received:Received: MIME-Version:Received:Received:In-Reply-To:References:Date: Message-ID:Subject:From:To:Cc:Content-Type:Mailing-List: Precedence:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:Sender:Delivered-To; bh=wyWrBMkosBD/l8uq1MFv6D8MlBM=; b=Ovx0buRgbZBGnZbkldojVG4iExslNy0Z5ZhkTPDP7A4+ccLNf1OfzcCiaBdOng 0lusArt1TR0RyAlllQxkivvNbHMDacrrsEBBtaCHLTic1fpd4IRkfRBWJV3SfUwd T7gYmhEyUZZimRnrkfqN85BSuoTmxQLsaH5hHfre/Vjlo= Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=gcc.gnu.org; h=Received:Received:X-SWARE-Spam-Status:X-Spam-Check-By:Received:Received:X-Google-DKIM-Signature:MIME-Version:Received:Received:In-Reply-To:References:Date:Message-ID:Subject:From:To:Cc:Content-Type:X-Gm-Message-State:X-IsSubscribed:Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help:Sender:Delivered-To; b=JIRrQUhygKB68PmOzy5x6FqYq0gC7gG219GU1Fsp9Jk4yjFRrlHNX7n9BRPDMF GQNqkeWqIPFQrUNMBrdg+RhpwmW0IEl5nCBMyNHY9MKcyVKt7ZyCXqUftbOS2eHM yonF0TBHR3xjTIHZzPGU8HqXb71tLX35nmLV+GYQ/imyU=; Received: (qmail 17334 invoked by alias); 19 Dec 2012 16:00:11 -0000 Received: (qmail 17271 invoked by uid 22791); 19 Dec 2012 16:00:05 -0000 X-SWARE-Spam-Status: No, hits=-2.0 required=5.0 tests=AWL, BAYES_40, KHOP_RCVD_UNTRUST, KHOP_THREADED, RCVD_IN_DNSWL_LOW, RCVD_IN_HOSTKARMA_YE, TW_VB X-Spam-Check-By: sourceware.org Received: from mail-qc0-f171.google.com (HELO mail-qc0-f171.google.com) (209.85.216.171) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 19 Dec 2012 15:59:58 +0000 Received: by mail-qc0-f171.google.com with SMTP id d1so1162391qca.2 for ; Wed, 19 Dec 2012 07:59:56 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:x-gm-message-state; bh=I8cFxgVq+02npEzAa6Mgv3hyM2ECPi11yJ6meS5o7no=; b=Iy1mzuEXPpoRAiK1MGrEAnp/5BTk7k6EiSjTIu29WV0ve0D3xzyrW9BXbGR4W+f5s7 UGYkHQmFMUsXIBw4GKupBGnyG/4Sw5VMJOFgMvgkz3tCRHIk2GKoL8NnTF43YXqzM7M3 CjQFF4ZSEOLwbh2vWmX+hkey+14Uk7A5UwoN6xu6ovFNFdXe1eMhg8T4MuAKcBZ6w+sI X+IbOSdWP1J1jRHoDVp5ivzM6UucNE1Q5mBGQiKOQg0NRDEk4sjbV8+oGiryDb1R1dO4 5hooSFgPXOPyleEj2S/27JTNHU0AqB0HohQntTLJAc3n6UjGTzJDTH/a+ac9tFuQyxhc bCZg== MIME-Version: 1.0 Received: by 10.224.185.138 with SMTP id co10mr2796856qab.97.1355932795197; Wed, 19 Dec 2012 07:59:55 -0800 (PST) Received: by 10.49.6.102 with HTTP; Wed, 19 Dec 2012 07:59:55 -0800 (PST) In-Reply-To: <50CF366B.2060405@arm.com> References: <50CF366B.2060405@arm.com> Date: Wed, 19 Dec 2012 16:59:55 +0100 Message-ID: Subject: Re: [ARM] Turning off 64bits ops in Neon and gfortran/modulo-scheduling problem From: Christophe Lyon To: Richard Earnshaw Cc: "gcc-patches@gcc.gnu.org" X-Gm-Message-State: ALoCoQkkntyBGX+DdT+K7DnMRaipL8HUV3TUuvNTyCMGqMEMCBNmwQ3FQXszqZX7XUNqXS67OBs3 X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org On 17 December 2012 16:12, Richard Earnshaw wrote: > On 29/11/12 17:16, Christophe Lyon wrote: >> On trunk I have noticed a regression in gfortran when using modulo >> scheduling: sms-1.f90 now fails, but I suspect it's not because of >> this patch since forcing compilation for armv5t makes the same test >> fail with and without my patch. >> > > Hmm, that's worrying. Could you please makesure this is recorded in > bugzilla. If this is a regression, please mark it as such. > I was about to do so, but after bisecting it turns out that the problem was introduced by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192969 and is very likely to be another instance of PR55562, which has just been fixed by http://gcc.gnu.org/ml/gcc-patches/2012-12/msg01137.html. > > Now that this optimization is disabled by default, the onlya8 code is > completely redundant and should be purged, along with the insn alternatives > that used it. > > R. > Here is a new version of my patch, with the cleanup you requested. 2012-12-18 Christophe Lyon gcc/ * config/arm/arm-protos.h (tune_params): Add prefer_neon_for_64bits field. * config/arm/arm.c (prefer_neon_for_64bits): New variable. (arm_slowmul_tune): Default prefer_neon_for_64bits to false. (arm_fastmul_tune, arm_strongarm_tune, arm_xscale_tune): Ditto. (arm_9e_tune, arm_v6t2_tune, arm_cortex_tune): Ditto. (arm_cortex_a5_tune, arm_cortex_a15_tune): Ditto. (arm_cortex_a9_tune, arm_fa726te_tune): Ditto. (arm_option_override): Handle -mneon-for-64bits new option. * config/arm/arm.h (TARGET_PREFER_NEON_64BITS): New macro. (prefer_neon_for_64bits): Declare new variable. * config/arm/arm.md (arch): Rename neon_onlya8 and neon_nota8 to avoid_neon_for_64bits and neon_for_64bits. Remove onlya8 and nota8. (arch_enabled): Handle new arch types. Remove support for onlya8 and nota8. (one_cmpldi2): Use new arch names. * config/arm/arm.opt (mneon-for-64bits): Add option. * config/arm/neon.md (adddi3_neon, subdi3_neon, iordi3_neon) (anddi3_neon, xordi3_neon, ashldi3_neon, di3_neon): Use neon_for_64bits instead of nota8 and avoid_neon_for_64bits instead of onlya8. * doc/invoke.texi (-mneon-for-64bits): Document. gcc/testsuite/ * gcc.target/arm/neon-for-64bits-1.c: New tests. * gcc.target/arm/neon-for-64bits-2.c: Likewise. diff --git a/gcc/config/arm/arm-protos.h b/gcc/config/arm/arm-protos.h index d942c5b..c92f055 100644 --- a/gcc/config/arm/arm-protos.h +++ b/gcc/config/arm/arm-protos.h @@ -247,6 +247,8 @@ struct tune_params performance. The first element covers Thumb state and the second one is for ARM state. */ bool logical_op_non_short_circuit[2]; + /* Prefer Neon for 64-bit bitops. */ + bool prefer_neon_for_64bits; }; extern const struct tune_params *current_tune; diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 84ce56f..5e99436 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -816,6 +816,10 @@ int arm_arch_thumb2; int arm_arch_arm_hwdiv; int arm_arch_thumb_hwdiv; +/* Nonzero if we should use Neon to handle 64-bits operations rather + than core registers. */ +int prefer_neon_for_64bits = 0; + /* In case of a PRE_INC, POST_INC, PRE_DEC, POST_DEC memory reference, we must report the mode of the memory reference from TARGET_PRINT_OPERAND to TARGET_PRINT_OPERAND_ADDRESS. */ @@ -895,6 +899,7 @@ const struct tune_params arm_slowmul_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_fastmul_tune = @@ -908,6 +913,7 @@ const struct tune_params arm_fastmul_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; /* StrongARM has early execution of branches, so a sequence that is worth @@ -924,6 +930,7 @@ const struct tune_params arm_strongarm_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_xscale_tune = @@ -937,6 +944,7 @@ const struct tune_params arm_xscale_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_9e_tune = @@ -950,6 +958,7 @@ const struct tune_params arm_9e_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_v6t2_tune = @@ -963,6 +972,7 @@ const struct tune_params arm_v6t2_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; /* Generic Cortex tuning. Use more specific tunings if appropriate. */ @@ -977,6 +987,7 @@ const struct tune_params arm_cortex_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_cortex_a15_tune = @@ -990,6 +1001,7 @@ const struct tune_params arm_cortex_a15_tune = arm_default_branch_cost, true, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; /* Branches can be dual-issued on Cortex-A5, so conditional execution is @@ -1006,6 +1018,7 @@ const struct tune_params arm_cortex_a5_tune = arm_cortex_a5_branch_cost, false, /* Prefer LDRD/STRD. */ {false, false}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_cortex_a9_tune = @@ -1019,6 +1032,7 @@ const struct tune_params arm_cortex_a9_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; /* The arm_v6m_tune is duplicated from arm_cortex_tune, rather than @@ -1034,6 +1048,7 @@ const struct tune_params arm_v6m_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {false, false}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; const struct tune_params arm_fa726te_tune = @@ -1047,6 +1062,7 @@ const struct tune_params arm_fa726te_tune = arm_default_branch_cost, false, /* Prefer LDRD/STRD. */ {true, true}, /* Prefer non short circuit. */ + false /* Prefer Neon for 64-bits bitops. */ }; @@ -2077,6 +2093,12 @@ arm_option_override (void) global_options.x_param_values, global_options_set.x_param_values); + /* Use Neon to perform 64-bits operations rather than core + registers. */ + prefer_neon_for_64bits = current_tune->prefer_neon_for_64bits; + if (use_neon_for_64bits == 1) + prefer_neon_for_64bits = true; + /* Use the alternative scheduling-pressure algorithm by default. */ maybe_set_param_value (PARAM_SCHED_PRESSURE_ALGORITHM, 2, global_options.x_param_values, diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index d0f351d..bcaa890 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -356,6 +356,9 @@ extern void (*arm_lang_output_object_attributes_hook)(void); #define TARGET_IDIV ((TARGET_ARM && arm_arch_arm_hwdiv) \ || (TARGET_THUMB2 && arm_arch_thumb_hwdiv)) +/* Should NEON be used for 64-bits bitops. */ +#define TARGET_PREFER_NEON_64BITS (prefer_neon_for_64bits) + /* True iff the full BPABI is being used. If TARGET_BPABI is true, then TARGET_AAPCS_BASED must be true -- but the converse does not hold. TARGET_BPABI implies the use of the BPABI runtime library, @@ -541,6 +544,10 @@ extern int arm_arch_arm_hwdiv; /* Nonzero if chip supports integer division instruction in Thumb mode. */ extern int arm_arch_thumb_hwdiv; +/* Nonzero if we should use Neon to handle 64-bits operations rather + than core registers. */ +extern int prefer_neon_for_64bits; + #ifndef TARGET_DEFAULT #define TARGET_DEFAULT (MASK_APCS_FRAME) #endif diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index 649e901..e24c2b4 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -96,7 +96,7 @@ ; for ARM or Thumb-2 with arm_arch6, and nov6 for ARM without ; arm_arch6. This attribute is used to compute attribute "enabled", ; use type "any" to enable an alternative in all cases. -(define_attr "arch" "any,a,t,32,t1,t2,v6,nov6,onlya8,neon_onlya8,nota8,neon_nota8,iwmmxt,iwmmxt2" +(define_attr "arch" "any,a,t,32,t1,t2,v6,nov6,neon_for_64bits,avoid_neon_for_64bits,iwmmxt,iwmmxt2" (const_string "any")) (define_attr "arch_enabled" "no,yes" @@ -131,22 +131,14 @@ (match_test "TARGET_32BIT && !arm_arch6")) (const_string "yes") - (and (eq_attr "arch" "onlya8") - (eq_attr "tune" "cortexa8")) + (and (eq_attr "arch" "avoid_neon_for_64bits") + (match_test "TARGET_NEON") + (not (match_test "TARGET_PREFER_NEON_64BITS"))) (const_string "yes") - (and (eq_attr "arch" "neon_onlya8") - (eq_attr "tune" "cortexa8") - (match_test "TARGET_NEON")) - (const_string "yes") - - (and (eq_attr "arch" "nota8") - (not (eq_attr "tune" "cortexa8"))) - (const_string "yes") - - (and (eq_attr "arch" "neon_nota8") - (not (eq_attr "tune" "cortexa8")) - (match_test "TARGET_NEON")) + (and (eq_attr "arch" "neon_for_64bits") + (match_test "TARGET_NEON") + (match_test "TARGET_PREFER_NEON_64BITS")) (const_string "yes") (and (eq_attr "arch" "iwmmxt2") @@ -4326,7 +4318,7 @@ [(set_attr "length" "*,8,8,*") (set_attr "predicable" "no,yes,yes,no") (set_attr "neon_type" "neon_int_1,*,*,neon_int_1") - (set_attr "arch" "neon_nota8,*,*,neon_onlya8")] + (set_attr "arch" "neon_for_64bits,*,*,avoid_neon_for_64bits")] ) (define_expand "one_cmplsi2" diff --git a/gcc/config/arm/arm.opt b/gcc/config/arm/arm.opt index 61d2d2f..c4ede22 100644 --- a/gcc/config/arm/arm.opt +++ b/gcc/config/arm/arm.opt @@ -247,3 +247,7 @@ that may trigger Cortex-M3 errata. munaligned-access Target Report Var(unaligned_access) Init(2) Enable unaligned word and halfword accesses to packed data. + +mneon-for-64bits +Target Report RejectNegative Var(use_neon_for_64bits) Init(0) +Use Neon to perform 64-bits operations rather than core registers. diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md index fc38269..6e13d1a 100644 --- a/gcc/config/arm/neon.md +++ b/gcc/config/arm/neon.md @@ -488,7 +488,7 @@ [(set_attr "neon_type" "neon_int_1,*,*,neon_int_1,*,*,*") (set_attr "conds" "*,clob,clob,*,clob,clob,clob") (set_attr "length" "*,8,8,*,8,8,8") - (set_attr "arch" "nota8,*,*,onlya8,*,*,*")] + (set_attr "arch" "neon_for_64bits,*,*,avoid_neon_for_64bits,*,*,*")] ) (define_insn "*sub3_neon" @@ -525,7 +525,7 @@ [(set_attr "neon_type" "neon_int_2,*,*,*,neon_int_2") (set_attr "conds" "*,clob,clob,clob,*") (set_attr "length" "*,8,8,8,*") - (set_attr "arch" "nota8,*,*,*,onlya8")] + (set_attr "arch" "neon_for_64bits,*,*,*,avoid_neon_for_64bits")] ) (define_insn "*mul3_neon" @@ -700,7 +700,7 @@ } [(set_attr "neon_type" "neon_int_1,neon_int_1,*,*,neon_int_1,neon_int_1") (set_attr "length" "*,*,8,8,*,*") - (set_attr "arch" "nota8,nota8,*,*,onlya8,onlya8")] + (set_attr "arch" "neon_for_64bits,neon_for_64bits,*,*,avoid_neon_for_64bits,avoid_neon_for_64bits")] ) ;; The concrete forms of the Neon immediate-logic instructions are vbic and @@ -745,7 +745,7 @@ } [(set_attr "neon_type" "neon_int_1,neon_int_1,*,*,neon_int_1,neon_int_1") (set_attr "length" "*,*,8,8,*,*") - (set_attr "arch" "nota8,nota8,*,*,onlya8,onlya8")] + (set_attr "arch" "neon_for_64bits,neon_for_64bits,*,*,avoid_neon_for_64bits,avoid_neon_for_64bits")] ) (define_insn "orn3_neon" @@ -841,7 +841,7 @@ veor\t%P0, %P1, %P2" [(set_attr "neon_type" "neon_int_1,*,*,neon_int_1") (set_attr "length" "*,8,8,*") - (set_attr "arch" "nota8,*,*,onlya8")] + (set_attr "arch" "neon_for_64bits,*,*,avoid_neon_for_64bits")] ) (define_insn "one_cmpl2" @@ -1163,7 +1163,7 @@ } DONE; }" - [(set_attr "arch" "nota8,nota8,*,*,onlya8,onlya8") + [(set_attr "arch" "neon_for_64bits,neon_for_64bits,*,*,avoid_neon_for_64bits,avoid_neon_for_64bits") (set_attr "opt" "*,*,speed,speed,*,*")] ) @@ -1264,7 +1264,7 @@ DONE; }" - [(set_attr "arch" "nota8,nota8,*,*,onlya8,onlya8") + [(set_attr "arch" "neon_for_64bits,neon_for_64bits,*,*,avoid_neon_for_64bits,avoid_neon_for_64bits") (set_attr "opt" "*,*,speed,speed,*,*")] ) diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 06ba770..01faecd 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -513,7 +513,8 @@ Objective-C and Objective-C++ Dialects}. -mtp=@var{name} -mtls-dialect=@var{dialect} @gol -mword-relocations @gol -mfix-cortex-m3-ldrd @gol --munaligned-access} +-munaligned-access @gol +-mneon-for-64bits} @emph{AVR Options} @gccoptlist{-mmcu=@var{mcu} -maccumulate-args -mbranch-cost=@var{cost} @gol @@ -11499,6 +11500,11 @@ setting of this option. If unaligned access is enabled then the preprocessor symbol @code{__ARM_FEATURE_UNALIGNED} will also be defined. +@item -mneon-for-64bits +@opindex mneon-for-64bits +Enables using Neon to handle scalar 64-bits operations. This is +disabled by default since the cost of moving data from core registers +to Neon is high. @end table @node AVR Options diff --git a/gcc/testsuite/gcc.target/arm/neon-for-64bits-1.c b/gcc/testsuite/gcc.target/arm/neon-for-64bits-1.c new file mode 100644 index 0000000..a2a4103 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/neon-for-64bits-1.c @@ -0,0 +1,54 @@ +/* Check that Neon is *not* used by default to handle 64-bits scalar + operations. */ + +/* { dg-do compile } */ +/* { dg-require-effective-target arm_neon_ok } */ +/* { dg-options "-O2" } */ +/* { dg-add-options arm_neon } */ + +typedef long long i64; +typedef unsigned long long u64; +typedef unsigned int u32; +typedef int i32; + +/* Unary operators */ +#define UNARY_OP(name, op) \ + void unary_##name(u64 *a, u64 *b) { *a = op (*b + 0x1234567812345678ULL) ; } + +/* Binary operators */ +#define BINARY_OP(name, op) \ + void binary_##name(u64 *a, u64 *b, u64 *c) { *a = *b op *c ; } + +/* Unsigned shift */ +#define SHIFT_U(name, op, amount) \ + void ushift_##name(u64 *a, u64 *b, int c) { *a = *b op amount; } + +/* Signed shift */ +#define SHIFT_S(name, op, amount) \ + void sshift_##name(i64 *a, i64 *b, int c) { *a = *b op amount; } + +UNARY_OP(not, ~) + +BINARY_OP(add, +) +BINARY_OP(sub, -) +BINARY_OP(and, &) +BINARY_OP(or, |) +BINARY_OP(xor, ^) + +SHIFT_U(right1, >>, 1) +SHIFT_U(right2, >>, 2) +SHIFT_U(right5, >>, 5) +SHIFT_U(rightn, >>, c) + +SHIFT_S(right1, >>, 1) +SHIFT_S(right2, >>, 2) +SHIFT_S(right5, >>, 5) +SHIFT_S(rightn, >>, c) + +/* { dg-final {scan-assembler-times "vmvn" 0} } */ +/* { dg-final {scan-assembler-times "vadd" 0} } */ +/* { dg-final {scan-assembler-times "vsub" 0} } */ +/* { dg-final {scan-assembler-times "vand" 0} } */ +/* { dg-final {scan-assembler-times "vorr" 0} } */ +/* { dg-final {scan-assembler-times "veor" 0} } */ +/* { dg-final {scan-assembler-times "vshr" 0} } */ diff --git a/gcc/testsuite/gcc.target/arm/neon-for-64bits-2.c b/gcc/testsuite/gcc.target/arm/neon-for-64bits-2.c new file mode 100644 index 0000000..035bfb7 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/neon-for-64bits-2.c @@ -0,0 +1,57 @@ +/* Check that Neon is used to handle 64-bits scalar operations. */ + +/* { dg-do compile } */ +/* { dg-require-effective-target arm_neon_ok } */ +/* { dg-options "-O2 -mneon-for-64bits" } */ +/* { dg-add-options arm_neon } */ + +typedef long long i64; +typedef unsigned long long u64; +typedef unsigned int u32; +typedef int i32; + +/* Unary operators */ +#define UNARY_OP(name, op) \ + void unary_##name(u64 *a, u64 *b) { *a = op (*b + 0x1234567812345678ULL) ; } + +/* Binary operators */ +#define BINARY_OP(name, op) \ + void binary_##name(u64 *a, u64 *b, u64 *c) { *a = *b op *c ; } + +/* Unsigned shift */ +#define SHIFT_U(name, op, amount) \ + void ushift_##name(u64 *a, u64 *b, int c) { *a = *b op amount; } + +/* Signed shift */ +#define SHIFT_S(name, op, amount) \ + void sshift_##name(i64 *a, i64 *b, int c) { *a = *b op amount; } + +UNARY_OP(not, ~) + +BINARY_OP(add, +) +BINARY_OP(sub, -) +BINARY_OP(and, &) +BINARY_OP(or, |) +BINARY_OP(xor, ^) + +SHIFT_U(right1, >>, 1) +SHIFT_U(right2, >>, 2) +SHIFT_U(right5, >>, 5) +SHIFT_U(rightn, >>, c) + +SHIFT_S(right1, >>, 1) +SHIFT_S(right2, >>, 2) +SHIFT_S(right5, >>, 5) +SHIFT_S(rightn, >>, c) + +/* { dg-final {scan-assembler-times "vmvn" 1} } */ +/* Two vadd: 1 in unary_not, 1 in binary_add */ +/* { dg-final {scan-assembler-times "vadd" 2} } */ +/* { dg-final {scan-assembler-times "vsub" 1} } */ +/* { dg-final {scan-assembler-times "vand" 1} } */ +/* { dg-final {scan-assembler-times "vorr" 1} } */ +/* { dg-final {scan-assembler-times "veor" 1} } */ +/* 6 vshr for right shifts by constant, and variable right shift uses + vshl with a negative amount in register. */ +/* { dg-final {scan-assembler-times "vshr" 6} } */ +/* { dg-final {scan-assembler-times "vshl" 2} } */