[llvm] 39a0d68 - [X86] Add a stub for Intel's alderlake.
Benjamin Kramer via llvm-commits
llvm-commits at lists.llvm.org
Sat Oct 24 10:03:26 PDT 2020
Author: Benjamin Kramer
Date: 2020-10-24T19:01:22+02:00
New Revision: 39a0d6889dee636af3b7fbb69e1ac5c8af777ad0
URL: https://github.com/llvm/llvm-project/commit/39a0d6889dee636af3b7fbb69e1ac5c8af777ad0
DIFF: https://github.com/llvm/llvm-project/commit/39a0d6889dee636af3b7fbb69e1ac5c8af777ad0.diff
LOG: [X86] Add a stub for Intel's alderlake.
No scheduling, no autodetection.
Added:
Modified:
clang/docs/ReleaseNotes.rst
clang/lib/Basic/Targets/X86.cpp
clang/test/CodeGen/attr-target-mv.c
clang/test/CodeGen/target-builtin-noerror.c
clang/test/Driver/x86-march.c
clang/test/Misc/target-invalid-cpu-note.c
clang/test/Preprocessor/predefined-arch-macros.c
compiler-rt/lib/builtins/cpu_model.c
llvm/docs/ReleaseNotes.rst
llvm/include/llvm/Support/X86TargetParser.def
llvm/include/llvm/Support/X86TargetParser.h
llvm/lib/Support/X86TargetParser.cpp
llvm/lib/Target/X86/X86.td
llvm/test/CodeGen/X86/cpus-intel.ll
Removed:
################################################################################
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 56337177e060..2a7beba73b69 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -190,7 +190,8 @@ X86 Support in Clang
- The x86 intrinsics ``__rorb``, ``__rorw``, ``__rord``, ``__rorq`, ``_rotr``,
``_rotwr`` and ``_lrotr`` may now be used within constant expressions.
-- Support for ``-march=sapphirerapids`` was added.
+- Support for ``-march=alderlake``, ``-march=sapphirerapids`` and
+ ``-march=znver3`` was added.
- Support for ``-march=x86-64-v[234]`` has been added.
See :doc:`UsersManual` for details about these micro-architecture levels.
diff --git a/clang/lib/Basic/Targets/X86.cpp b/clang/lib/Basic/Targets/X86.cpp
index 3239e3231cc0..4ce3a5d0327f 100644
--- a/clang/lib/Basic/Targets/X86.cpp
+++ b/clang/lib/Basic/Targets/X86.cpp
@@ -468,6 +468,7 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
case CK_IcelakeServer:
case CK_Tigerlake:
case CK_SapphireRapids:
+ case CK_Alderlake:
// FIXME: Historically, we defined this legacy name, it would be nice to
// remove it at some point. We've never exposed fine-grained names for
// recent primary x86 CPUs, and we should keep it that way.
@@ -1308,6 +1309,7 @@ Optional<unsigned> X86TargetInfo::getCPUCacheLineSize() const {
case CK_SapphireRapids:
case CK_IcelakeClient:
case CK_IcelakeServer:
+ case CK_Alderlake:
case CK_KNL:
case CK_KNM:
// K7
diff --git a/clang/test/CodeGen/attr-target-mv.c b/clang/test/CodeGen/attr-target-mv.c
index 57b266403dfc..adad3c936a99 100644
--- a/clang/test/CodeGen/attr-target-mv.c
+++ b/clang/test/CodeGen/attr-target-mv.c
@@ -12,6 +12,7 @@ int __attribute__((target("arch=icelake-server"))) foo(void) {return 7;}
int __attribute__((target("arch=cooperlake"))) foo(void) {return 8;}
int __attribute__((target("arch=tigerlake"))) foo(void) {return 9;}
int __attribute__((target("arch=sapphirerapids"))) foo(void) {return 10;}
+int __attribute__((target("arch=alderlake"))) foo(void) {return 11;}
int __attribute__((target("default"))) foo(void) { return 2; }
int bar() {
@@ -94,6 +95,8 @@ __attribute__((target("avx,sse4.2"), used)) inline void foo_used2(int i, double
// LINUX: ret i32 9
// LINUX: define i32 @foo.arch_sapphirerapids()
// LINUX: ret i32 10
+// LINUX: define i32 @foo.arch_alderlake()
+// LINUX: ret i32 11
// LINUX: define i32 @foo()
// LINUX: ret i32 2
// LINUX: define i32 @bar()
diff --git a/clang/test/CodeGen/target-builtin-noerror.c b/clang/test/CodeGen/target-builtin-noerror.c
index 42164303e4a6..50967c6657cd 100644
--- a/clang/test/CodeGen/target-builtin-noerror.c
+++ b/clang/test/CodeGen/target-builtin-noerror.c
@@ -85,6 +85,7 @@ void verifyfeaturestrings() {
}
void verifycpustrings() {
+ (void)__builtin_cpu_is("alderlake");
(void)__builtin_cpu_is("amd");
(void)__builtin_cpu_is("amdfam10h");
(void)__builtin_cpu_is("amdfam15h");
diff --git a/clang/test/Driver/x86-march.c b/clang/test/Driver/x86-march.c
index 26ffc161c273..871f47109b40 100644
--- a/clang/test/Driver/x86-march.c
+++ b/clang/test/Driver/x86-march.c
@@ -80,6 +80,10 @@
// RUN: | FileCheck %s -check-prefix=tigerlake
// tigerlake: "-target-cpu" "tigerlake"
//
+// RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=alderlake 2>&1 \
+// RUN: | FileCheck %s -check-prefix=alderlake
+// alderlake: "-target-cpu" "alderlake"
+//
// RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=lakemont 2>&1 \
// RUN: | FileCheck %s -check-prefix=lakemont
// lakemont: "-target-cpu" "lakemont"
diff --git a/clang/test/Misc/target-invalid-cpu-note.c b/clang/test/Misc/target-invalid-cpu-note.c
index 82165de6f079..d54403331f57 100644
--- a/clang/test/Misc/target-invalid-cpu-note.c
+++ b/clang/test/Misc/target-invalid-cpu-note.c
@@ -21,7 +21,7 @@
// X86-SAME: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont,
// X86-SAME: nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge,
// X86-SAME: core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512,
-// X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, lakemont, k6, k6-2, k6-3,
+// X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, lakemont, k6, k6-2, k6-3,
// X86-SAME: athlon, athlon-tbird, athlon-xp, athlon-mp, athlon-4, k8, athlon64,
// X86-SAME: athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
// X86-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3,
@@ -33,7 +33,7 @@
// X86_64-SAME: atom, silvermont, slm, goldmont, goldmont-plus, tremont, nehalem, corei7, westmere,
// X86_64-SAME: sandybridge, corei7-avx, ivybridge, core-avx-i, haswell,
// X86_64-SAME: core-avx2, broadwell, skylake, skylake-avx512, skx, cascadelake, cooperlake, cannonlake,
-// X86_64-SAME: icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, k8, athlon64, athlon-fx, opteron, k8-sse3,
+// X86_64-SAME: icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, k8, athlon64, athlon-fx, opteron, k8-sse3,
// X86_64-SAME: athlon64-sse3, opteron-sse3, amdfam10, barcelona, btver1,
// X86_64-SAME: btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3,
// X86_64-SAME: x86-64, x86-64-v2, x86-64-v3, x86-64-v4{{$}}
@@ -46,7 +46,7 @@
// TUNE_X86-SAME: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont,
// TUNE_X86-SAME: nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge,
// TUNE_X86-SAME: core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512,
-// TUNE_X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, lakemont, k6, k6-2, k6-3,
+// TUNE_X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, lakemont, k6, k6-2, k6-3,
// TUNE_X86-SAME: athlon, athlon-tbird, athlon-xp, athlon-mp, athlon-4, k8, athlon64,
// TUNE_X86-SAME: athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
// TUNE_X86-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3,
@@ -60,7 +60,7 @@
// TUNE_X86_64-SAME: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont,
// TUNE_X86_64-SAME: nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge,
// TUNE_X86_64-SAME: core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512,
-// TUNE_X86_64-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, lakemont, k6, k6-2, k6-3,
+// TUNE_X86_64-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, lakemont, k6, k6-2, k6-3,
// TUNE_X86_64-SAME: athlon, athlon-tbird, athlon-xp, athlon-mp, athlon-4, k8, athlon64,
// TUNE_X86_64-SAME: athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
// TUNE_X86_64-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3,
diff --git a/clang/test/Preprocessor/predefined-arch-macros.c b/clang/test/Preprocessor/predefined-arch-macros.c
index 65089e8f97c7..f469b9aded64 100644
--- a/clang/test/Preprocessor/predefined-arch-macros.c
+++ b/clang/test/Preprocessor/predefined-arch-macros.c
@@ -1775,6 +1775,91 @@
// CHECK_SPR_M64: #define __x86_64 1
// CHECK_SPR_M64: #define __x86_64__ 1
+// RUN: %clang -march=alderlake -m32 -E -dM %s -o - 2>&1 \
+// RUN: -target i386-unknown-linux \
+// RUN: | FileCheck -match-full-lines %s -check-prefix=CHECK_ADL_M32
+// CHECK_ADL_M32: #define __ADX__ 1
+// CHECK_ADL_M32: #define __AES__ 1
+// CHECK_ADL_M32: #define __AVX2__ 1
+// CHECK_ADL_M32-NOT: AVX512
+// CHECK_ADL_M32: #define __AVX__ 1
+// CHECK_ADL_M32: #define __BMI2__ 1
+// CHECK_ADL_M32: #define __BMI__ 1
+// CHECK_ADL_M32: #define __CLDEMOTE__ 1
+// CHECK_ADL_M32: #define __CLFLUSHOPT__ 1
+// CHECK_ADL_M32: #define __F16C__ 1
+// CHECK_ADL_M32: #define __FMA__ 1
+// CHECK_ADL_M32: #define __HRESET__ 1
+// CHECK_ADL_M32: #define __INVPCID__ 1
+// CHECK_ADL_M32: #define __LZCNT__ 1
+// CHECK_ADL_M32: #define __MMX__ 1
+// CHECK_ADL_M32: #define __MOVBE__ 1
+// CHECK_ADL_M32: #define __PCLMUL__ 1
+// CHECK_ADL_M32: #define __POPCNT__ 1
+// CHECK_ADL_M32: #define __PRFCHW__ 1
+// CHECK_ADL_M32: #define __PTWRITE__ 1
+// CHECK_ADL_M32: #define __RDRND__ 1
+// CHECK_ADL_M32: #define __RDSEED__ 1
+// CHECK_ADL_M32: #define __SERIALIZE__ 1
+// CHECK_ADL_M32: #define __SGX__ 1
+// CHECK_ADL_M32: #define __SSE2__ 1
+// CHECK_ADL_M32: #define __SSE3__ 1
+// CHECK_ADL_M32: #define __SSE4_1__ 1
+// CHECK_ADL_M32: #define __SSE4_2__ 1
+// CHECK_ADL_M32: #define __SSE__ 1
+// CHECK_ADL_M32: #define __SSSE3__ 1
+// CHECK_ADL_M32: #define __WAITPKG__ 1
+// CHECK_ADL_M32: #define __XSAVEC__ 1
+// CHECK_ADL_M32: #define __XSAVEOPT__ 1
+// CHECK_ADL_M32: #define __XSAVES__ 1
+// CHECK_ADL_M32: #define __XSAVE__ 1
+// CHECK_ADL_M32: #define i386 1
+
+// RUN: %clang -march=alderlake -m64 -E -dM %s -o - 2>&1 \
+// RUN: -target i386-unknown-linux \
+// RUN: | FileCheck -match-full-lines %s -check-prefix=CHECK_ADL_M64
+// CHECK_ADL_M64: #define __ADX__ 1
+// CHECK_ADL_M64: #define __AES__ 1
+// CHECK_ADL_M64: #define __AVX2__ 1
+// CHECK_ADL_M64-NOT: AVX512
+// CHECK_ADL_M64: #define __AVX__ 1
+// CHECK_ADL_M64: #define __BMI2__ 1
+// CHECK_ADL_M64: #define __BMI__ 1
+// CHECK_ADL_M64: #define __CLDEMOTE__ 1
+// CHECK_ADL_M64: #define __CLFLUSHOPT__ 1
+// CHECK_ADL_M64: #define __F16C__ 1
+// CHECK_ADL_M64: #define __FMA__ 1
+// CHECK_ADL_M64: #define __HRESET__ 1
+// CHECK_ADL_M64: #define __INVPCID__ 1
+// CHECK_ADL_M64: #define __LZCNT__ 1
+// CHECK_ADL_M64: #define __MMX__ 1
+// CHECK_ADL_M64: #define __MOVBE__ 1
+// CHECK_ADL_M64: #define __PCLMUL__ 1
+// CHECK_ADL_M64: #define __POPCNT__ 1
+// CHECK_ADL_M64: #define __PRFCHW__ 1
+// CHECK_ADL_M64: #define __PTWRITE__ 1
+// CHECK_ADL_M64: #define __RDRND__ 1
+// CHECK_ADL_M64: #define __RDSEED__ 1
+// CHECK_ADL_M64: #define __SERIALIZE__ 1
+// CHECK_ADL_M64: #define __SGX__ 1
+// CHECK_ADL_M64: #define __SSE2_MATH__ 1
+// CHECK_ADL_M64: #define __SSE2__ 1
+// CHECK_ADL_M64: #define __SSE3__ 1
+// CHECK_ADL_M64: #define __SSE4_1__ 1
+// CHECK_ADL_M64: #define __SSE4_2__ 1
+// CHECK_ADL_M64: #define __SSE_MATH__ 1
+// CHECK_ADL_M64: #define __SSE__ 1
+// CHECK_ADL_M64: #define __SSSE3__ 1
+// CHECK_ADL_M64: #define __WAITPKG__ 1
+// CHECK_ADL_M64: #define __XSAVEC__ 1
+// CHECK_ADL_M64: #define __XSAVEOPT__ 1
+// CHECK_ADL_M64: #define __XSAVES__ 1
+// CHECK_ADL_M64: #define __XSAVE__ 1
+// CHECK_ADL_M64: #define __amd64 1
+// CHECK_ADL_M64: #define __amd64__ 1
+// CHECK_ADL_M64: #define __x86_64 1
+// CHECK_ADL_M64: #define __x86_64__ 1
+
// RUN: %clang -march=atom -m32 -E -dM %s -o - 2>&1 \
// RUN: -target i386-unknown-linux \
// RUN: | FileCheck -match-full-lines %s -check-prefix=CHECK_ATOM_M32
diff --git a/compiler-rt/lib/builtins/cpu_model.c b/compiler-rt/lib/builtins/cpu_model.c
index d6dc73b88bc2..e8b23d5e5381 100644
--- a/compiler-rt/lib/builtins/cpu_model.c
+++ b/compiler-rt/lib/builtins/cpu_model.c
@@ -85,6 +85,7 @@ enum ProcessorSubtypes {
INTEL_COREI7_TIGERLAKE,
INTEL_COREI7_COOPERLAKE,
INTEL_COREI7_SAPPHIRERAPIDS,
+ INTEL_COREI7_ALDERLAKE,
CPU_SUBTYPE_MAX
};
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 5089cc6ca93e..e4329d0aac60 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -109,7 +109,8 @@ During this release ...
* The 'mpx' feature was removed from the backend. It had been removed from clang
frontend in 10.0. Mention of the 'mpx' feature in an IR file will print a
message to stderr, but IR should still compile.
-* Support for ``-march=sapphirerapids`` and ``-march=x86-64-v[234]`` has been added.
+* Support for ``-march=alderlake``, ``-march=sapphirerapids``,
+ ``-march=znver3`` and ``-march=x86-64-v[234]`` has been added.
* The assembler now has support for {disp32} and {disp8} pseudo prefixes for
controlling displacement size for memory operands and jump displacements. The
assembler also supports the .d32 and .d8 mnemonic suffixes to do the same.
diff --git a/llvm/include/llvm/Support/X86TargetParser.def b/llvm/include/llvm/Support/X86TargetParser.def
index 4a0ba26f49f9..3d7a7756af8a 100644
--- a/llvm/include/llvm/Support/X86TargetParser.def
+++ b/llvm/include/llvm/Support/X86TargetParser.def
@@ -85,6 +85,7 @@ X86_CPU_SUBTYPE(INTEL_COREI7_CASCADELAKE, "cascadelake")
X86_CPU_SUBTYPE(INTEL_COREI7_TIGERLAKE, "tigerlake")
X86_CPU_SUBTYPE(INTEL_COREI7_COOPERLAKE, "cooperlake")
X86_CPU_SUBTYPE(INTEL_COREI7_SAPPHIRERAPIDS, "sapphirerapids")
+X86_CPU_SUBTYPE(INTEL_COREI7_ALDERLAKE, "alderlake")
#undef X86_CPU_SUBTYPE
diff --git a/llvm/include/llvm/Support/X86TargetParser.h b/llvm/include/llvm/Support/X86TargetParser.h
index 9a2599bd88b4..2d5083023a11 100644
--- a/llvm/include/llvm/Support/X86TargetParser.h
+++ b/llvm/include/llvm/Support/X86TargetParser.h
@@ -101,6 +101,7 @@ enum CPUKind {
CK_IcelakeServer,
CK_Tigerlake,
CK_SapphireRapids,
+ CK_Alderlake,
CK_KNL,
CK_KNM,
CK_Lakemont,
diff --git a/llvm/lib/Support/X86TargetParser.cpp b/llvm/lib/Support/X86TargetParser.cpp
index 0a803d0a6a3c..39069b03da9b 100644
--- a/llvm/lib/Support/X86TargetParser.cpp
+++ b/llvm/lib/Support/X86TargetParser.cpp
@@ -206,6 +206,9 @@ constexpr FeatureBitset FeaturesSapphireRapids =
FeatureENQCMD | FeatureMOVDIR64B | FeatureMOVDIRI | FeaturePTWRITE |
FeatureSERIALIZE | FeatureSHSTK | FeatureTSXLDTRK | FeatureUINTR |
FeatureWAITPKG;
+constexpr FeatureBitset FeaturesAlderlake =
+ FeaturesSkylakeClient | FeatureCLDEMOTE | FeatureHRESET | FeaturePTWRITE |
+ FeatureSERIALIZE | FeatureWAITPKG;
// Intel Atom processors.
// Bonnell has feature parity with Core2 and adds MOVBE.
@@ -357,6 +360,8 @@ constexpr ProcInfo Processors[] = {
{ {"tigerlake"}, CK_Tigerlake, FEATURE_AVX512VP2INTERSECT, FeaturesTigerlake },
// Sapphire Rapids microarchitecture based processors.
{ {"sapphirerapids"}, CK_SapphireRapids, FEATURE_AVX512VP2INTERSECT, FeaturesSapphireRapids },
+ // Alderlake microarchitecture based processors.
+ { {"alderlake"}, CK_Alderlake, FEATURE_AVX2, FeaturesAlderlake },
// Knights Landing processor.
{ {"knl"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL },
// Knights Mill processor.
diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index f39fbf1fca77..ea09503a4a3b 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -780,6 +780,16 @@ def ProcessorFeatures {
list<SubtargetFeature> SPRFeatures =
!listconcat(ICXFeatures, SPRAdditionalFeatures);
+ // Alderlake
+ list<SubtargetFeature> ADLAdditionalFeatures = [FeatureCLDEMOTE,
+ FeatureHRESET,
+ FeaturePTWRITE,
+ FeatureSERIALIZE,
+ FeatureWAITPKG];
+ list<SubtargetFeature> ADLTuning = SKLTuning;
+ list<SubtargetFeature> ADLFeatures =
+ !listconcat(SKLFeatures, ADLAdditionalFeatures);
+
// Atom
list<SubtargetFeature> AtomFeatures = [FeatureX87,
FeatureCMPXCHG8B,
@@ -1281,6 +1291,8 @@ def : ProcModel<"tigerlake", SkylakeServerModel,
ProcessorFeatures.TGLFeatures, ProcessorFeatures.TGLTuning>;
def : ProcModel<"sapphirerapids", SkylakeServerModel,
ProcessorFeatures.SPRFeatures, ProcessorFeatures.SPRTuning>;
+def : ProcModel<"alderlake", SkylakeClientModel,
+ ProcessorFeatures.ADLFeatures, ProcessorFeatures.ADLTuning>;
// AMD CPUs.
diff --git a/llvm/test/CodeGen/X86/cpus-intel.ll b/llvm/test/CodeGen/X86/cpus-intel.ll
index b065c6d34f80..eb5786dc0811 100644
--- a/llvm/test/CodeGen/X86/cpus-intel.ll
+++ b/llvm/test/CodeGen/X86/cpus-intel.ll
@@ -41,6 +41,7 @@
; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake-server 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=tigerlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=sapphirerapids 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
+; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=alderlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=atom 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=bonnell 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=silvermont 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
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