r263051 - [PPC] FE support for generating VSX [negated] absolute value instructions
Eric Christopher via cfe-commits
cfe-commits at lists.llvm.org
Wed Mar 9 14:36:24 PST 2016
On Wed, Mar 9, 2016 at 11:33 AM Kit Barton via cfe-commits <
cfe-commits at lists.llvm.org> wrote:
> Author: kbarton
> Date: Wed Mar 9 13:28:31 2016
> New Revision: 263051
>
> URL: http://llvm.org/viewvc/llvm-project?rev=263051&view=rev
> Log:
> [PPC] FE support for generating VSX [negated] absolute value instructions
>
> Includes new built-in, conversion of built-in to target-independent
> intrinsic
> and update in the header file. Tests are also updated. There is a second
> part in
> the backend for which I will post a separate code-review. BACKEND PART
> SHOULD BE
> COMMITTED FIRST.
>
>
Did you mean to commit this? Or just forget to edit your commit message?
-eric
> Phabricator: http://reviews.llvm.org/D17816
>
> Modified:
> cfe/trunk/include/clang/Basic/BuiltinsPPC.def
> cfe/trunk/lib/CodeGen/CGBuiltin.cpp
> cfe/trunk/lib/Headers/altivec.h
> cfe/trunk/test/CodeGen/builtins-ppc-altivec.c
> cfe/trunk/test/CodeGen/builtins-ppc-p8vector.c
> cfe/trunk/test/CodeGen/builtins-ppc-vsx.c
>
> Modified: cfe/trunk/include/clang/Basic/BuiltinsPPC.def
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/BuiltinsPPC.def?rev=263051&r1=263050&r2=263051&view=diff
>
> ==============================================================================
> --- cfe/trunk/include/clang/Basic/BuiltinsPPC.def (original)
> +++ cfe/trunk/include/clang/Basic/BuiltinsPPC.def Wed Mar 9 13:28:31 2016
> @@ -336,6 +336,9 @@ BUILTIN(__builtin_vsx_xxleqv, "V4UiV4UiV
> BUILTIN(__builtin_vsx_xvcpsgndp, "V2dV2dV2d", "")
> BUILTIN(__builtin_vsx_xvcpsgnsp, "V4fV4fV4f", "")
>
> +BUILTIN(__builtin_vsx_xvabssp, "V4fV4f", "")
> +BUILTIN(__builtin_vsx_xvabsdp, "V2dV2d", "")
> +
> // HTM builtins
> BUILTIN(__builtin_tbegin, "UiUIi", "")
> BUILTIN(__builtin_tend, "UiUIi", "")
>
> Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=263051&r1=263050&r2=263051&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Wed Mar 9 13:28:31 2016
> @@ -6992,6 +6992,16 @@ Value *CodeGenFunction::EmitPPCBuiltinEx
> llvm::Function *F = CGM.getIntrinsic(ID, ResultType);
> return Builder.CreateCall(F, X);
> }
> +
> + // Absolute value
> + case PPC::BI__builtin_vsx_xvabsdp:
> + case PPC::BI__builtin_vsx_xvabssp: {
> + llvm::Type *ResultType = ConvertType(E->getType());
> + Value *X = EmitScalarExpr(E->getArg(0));
> + llvm::Function *F = CGM.getIntrinsic(Intrinsic::fabs, ResultType);
> + return Builder.CreateCall(F, X);
> + }
> +
> // FMA variations
> case PPC::BI__builtin_vsx_xvmaddadp:
> case PPC::BI__builtin_vsx_xvmaddasp:
>
> Modified: cfe/trunk/lib/Headers/altivec.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Headers/altivec.h?rev=263051&r1=263050&r2=263051&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Headers/altivec.h (original)
> +++ cfe/trunk/lib/Headers/altivec.h Wed Mar 9 13:28:31 2016
> @@ -124,16 +124,18 @@ vec_abs(vector signed long long __a) {
> #endif
>
> static vector float __ATTRS_o_ai vec_abs(vector float __a) {
> +#ifdef __VSX__
> + return __builtin_vsx_xvabssp(__a);
> +#else
> vector unsigned int __res =
> (vector unsigned int)__a & (vector unsigned int)(0x7FFFFFFF);
> return (vector float)__res;
> +#endif
> }
>
> #if defined(__POWER8_VECTOR__) && defined(__powerpc64__)
> static vector double __ATTRS_o_ai vec_abs(vector double __a) {
> - vector unsigned long long __res = { 0x7FFFFFFFFFFFFFFF,
> 0x7FFFFFFFFFFFFFFF };
> - __res &= (vector unsigned int)__a;
> - return (vector double)__res;
> + return __builtin_vsx_xvabsdp(__a);
> }
> #endif
>
>
> Modified: cfe/trunk/test/CodeGen/builtins-ppc-altivec.c
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins-ppc-altivec.c?rev=263051&r1=263050&r2=263051&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/CodeGen/builtins-ppc-altivec.c (original)
> +++ cfe/trunk/test/CodeGen/builtins-ppc-altivec.c Wed Mar 9 13:28:31 2016
> @@ -1,7 +1,13 @@
> // REQUIRES: powerpc-registered-target
> -// RUN: %clang_cc1 -faltivec -triple powerpc-unknown-unknown -emit-llvm
> %s -o - | FileCheck %s
> -// RUN: %clang_cc1 -faltivec -triple powerpc64-unknown-unknown -emit-llvm
> %s -o - | FileCheck %s
> -// RUN: %clang_cc1 -faltivec -triple powerpc64le-unknown-unknown
> -emit-llvm %s -o - | FileCheck %s -check-prefix=CHECK-LE
> +// RUN: %clang_cc1 -faltivec -triple powerpc-unknown-unknown -emit-llvm
> %s \
> +// RUN: -o - | FileCheck %s
> +// RUN: %clang_cc1 -faltivec -triple powerpc64-unknown-unknown -emit-llvm
> %s \
> +// RUN: -o - | FileCheck %s
> +// RUN: %clang_cc1 -faltivec -triple powerpc64le-unknown-unknown
> -emit-llvm %s \
> +// RUN: -o - | FileCheck %s -check-prefix=CHECK-LE
> +// RUN: not %clang_cc1 -triple powerpc64le-unknown-unknown -emit-llvm %s \
> +// RUN: -ferror-limit 0 -o - 2>&1 \
> +// RUN: | FileCheck %s -check-prefix=CHECK-NOALTIVEC
>
> vector bool char vbc = { 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 };
> vector signed char vsc = { 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, 11, -12,
> 13, -14, 15, -16 };
> @@ -27,6 +33,8 @@ vector int res_vi;
> vector unsigned int res_vui;
> vector float res_vf;
>
> +// CHECK-NOALTIVEC: error: unknown type name 'vector'
> +
> signed char param_sc;
> unsigned char param_uc;
> short param_s;
> @@ -66,8 +74,16 @@ void test1() {
> // CHECK-LE: @llvm.ppc.altivec.vmaxsw
>
> vf = vec_abs(vf);
> -// CHECK: and <4 x i32>
> -// CHECK-LE: and <4 x i32>
> +// CHECK: bitcast <4 x float> %{{.*}} to <4 x i32>
> +// CHECK: and <4 x i32> {{.*}}, <i32 2147483647, i32 2147483647, i32
> 2147483647, i32 2147483647>
> +// CHECK: bitcast <4 x i32> %{{.*}} to <4 x float>
> +// CHECK: store <4 x float> %{{.*}}, <4 x float>* @vf
> +// CHECK-LE: bitcast <4 x float> %{{.*}} to <4 x i32>
> +// CHECK-LE: and <4 x i32> {{.*}}, <i32 2147483647, i32 2147483647, i32
> 2147483647, i32 2147483647>
> +// CHECK-LE: bitcast <4 x i32> %{{.*}} to <4 x float>
> +// CHECK-LE: store <4 x float> %{{.*}}, <4 x float>* @vf
> +// CHECK-NOALTIVEC: error: use of undeclared identifier 'vf'
> +// CHECK-NOALTIVEC: vf = vec_abs(vf)
>
> /* vec_abs */
> vsc = vec_abss(vsc);
>
> Modified: cfe/trunk/test/CodeGen/builtins-ppc-p8vector.c
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins-ppc-p8vector.c?rev=263051&r1=263050&r2=263051&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/CodeGen/builtins-ppc-p8vector.c (original)
> +++ cfe/trunk/test/CodeGen/builtins-ppc-p8vector.c Wed Mar 9 13:28:31 2016
> @@ -73,10 +73,10 @@ void test1() {
> // CHECK-PPC: error: call to 'vec_abs' is ambiguous
>
> res_vd = vec_abs(vda);
> -// CHECK: store <2 x i64> <i64 9223372036854775807, i64
> 9223372036854775807>, <2 x i64>*
> -// CHECK: and <2 x i64>
> -// CHECK-LE: store <2 x i64> <i64 9223372036854775807, i64
> 9223372036854775807>, <2 x i64>*
> -// CHECK-LE: and <2 x i64>
> +// CHECK: call <2 x double> @llvm.fabs.v2f64(<2 x double> %{{.*}})
> +// CHECK: store <2 x double> %{{.*}}, <2 x double>* @res_vd
> +// CHECK-LE: call <2 x double> @llvm.fabs.v2f64(<2 x double> %{{.*}})
> +// CHECK-LE: store <2 x double> %{{.*}}, <2 x double>* @res_vd
> // CHECK-PPC: error: call to 'vec_abs' is ambiguous
>
> /* vec_add */
>
> Modified: cfe/trunk/test/CodeGen/builtins-ppc-vsx.c
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins-ppc-vsx.c?rev=263051&r1=263050&r2=263051&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/CodeGen/builtins-ppc-vsx.c (original)
> +++ cfe/trunk/test/CodeGen/builtins-ppc-vsx.c Wed Mar 9 13:28:31 2016
> @@ -51,6 +51,14 @@ void test1() {
> // CHECK-LABEL: define void @test1
> // CHECK-LE-LABEL: define void @test1
>
> + res_vf = vec_abs(vf);
> +// CHECK: call <4 x float> @llvm.fabs.v4f32(<4 x float> %{{[0-9]*}})
> +// CHECK-LE: call <4 x float> @llvm.fabs.v4f32(<4 x float> %{{[0-9]*}})
> +
> + dummy();
> +// CHECK: call void @dummy()
> +// CHECK-LE: call void @dummy()
> +
> res_vd = vec_add(vd, vd);
> // CHECK: fadd <2 x double>
> // CHECK-LE: fadd <2 x double>
>
>
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