[PATCH] D45240: [ARM] Compute a target feature which corresponds to the ARM version.

Eli Friedman via Phabricator via cfe-commits Wed, 04 Apr 2018 15:58:53 -0700

efriedma updated this revision to Diff 141078.
efriedma added a comment.

Fixed to use the arch name as the "feature"; otherwise, we miss relevant 
features in certain cases.  This is taken from ARMAsmParser::parseDirectiveArch.



Repository:
  rC Clang

https://reviews.llvm.org/D45240

Files:
  lib/Basic/Targets/ARM.cpp
  test/CodeGen/arm-long-calls.c
  test/CodeGen/arm-no-movt.c
  test/CodeGen/arm-target-features.c
  test/CodeGen/arm-thumb-mode-target-feature.c

Index: test/CodeGen/arm-thumb-mode-target-feature.c
===================================================================
--- test/CodeGen/arm-thumb-mode-target-feature.c
+++ test/CodeGen/arm-thumb-mode-target-feature.c
@@ -17,8 +17,8 @@
 // THUMB: void @t1() [[ThumbAttr:#[0-7]]]
 // THUMB: void @t2() [[NoThumbAttr:#[0-7]]]
 // THUMB: void @t3() [[ThumbAttr:#[0-7]]]
-// THUMB: attributes [[ThumbAttr]] = { {{.*}} "target-features"="+thumb-mode"
-// THUMB: attributes [[NoThumbAttr]] = { {{.*}} "target-features"="-thumb-mode"
+// THUMB: attributes [[ThumbAttr]] = { {{.*}} "target-features"="+armv7-a,+thumb-mode"
+// THUMB: attributes [[NoThumbAttr]] = { {{.*}} "target-features"="+armv7-a,-thumb-mode"
 //
 // THUMB-CLANG: void @t1() [[ThumbAttr:#[0-7]]]
 // THUMB-CLANG: void @t2() [[NoThumbAttr:#[0-7]]]
@@ -29,5 +29,5 @@
 // ARM: void @t1() [[NoThumbAtr:#[0-7]]]
 // ARM: void @t2() [[NoThumbAttr:#[0-7]]]
 // ARM: void @t3() [[ThumbAttr:#[0-7]]]
-// ARM: attributes [[NoThumbAttr]] = { {{.*}} "target-features"="-thumb-mode"
-// ARM: attributes [[ThumbAttr]] = { {{.*}} "target-features"="+thumb-mode"
+// ARM: attributes [[NoThumbAttr]] = { {{.*}} "target-features"="+armv7-a,-thumb-mode"
+// ARM: attributes [[ThumbAttr]] = { {{.*}} "target-features"="+armv7-a,+thumb-mode"
Index: test/CodeGen/arm-target-features.c
===================================================================
--- test/CodeGen/arm-target-features.c
+++ test/CodeGen/arm-target-features.c
@@ -1,22 +1,23 @@
 // REQUIRES: arm-registered-target
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabihf -target-cpu cortex-a8 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP3
-// CHECK-VFP3: "target-features"="+dsp,+neon,+thumb-mode
+// CHECK-VFP3: "target-features"="+armv7-a,+dsp,+neon,+thumb-mode,+vfp3"
 
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabihf -target-cpu cortex-a5 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4
-// CHECK-VFP4: "target-features"="+dsp,+neon,+thumb-mode,+vfp4"
+// CHECK-VFP4: "target-features"="+armv7-a,+dsp,+neon,+thumb-mode,+vfp4"
 
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabihf -target-cpu cortex-a7 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-a12 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV
-// RUN: %clang_cc1 -triple thumbv7s-linux-gnueabi -target-cpu swift -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV
+// RUN: %clang_cc1 -triple thumbv7s-linux-gnueabi -target-cpu swift -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV-2
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabihf -target-cpu krait -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV
-// CHECK-VFP4-DIV: "target-features"="+dsp,+hwdiv,+hwdiv-arm,+neon,+thumb-mode,+vfp4"
+// CHECK-VFP4-DIV: "target-features"="+armv7-a,+dsp,+hwdiv,+hwdiv-arm,+neon,+thumb-mode,+vfp4"
+// CHECK-VFP4-DIV-2: "target-features"="+armv7s,+dsp,+hwdiv,+hwdiv-arm,+neon,+thumb-mode,+vfp4"
 
 // RUN: %clang_cc1 -triple armv7-linux-gnueabihf -target-cpu cortex-a15 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV-ARM
 // RUN: %clang_cc1 -triple armv7-linux-gnueabihf -target-cpu cortex-a17 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-DIV-ARM
-// CHECK-VFP4-DIV-ARM: "target-features"="+dsp,+hwdiv,+hwdiv-arm,+neon,+vfp4,-thumb-mode"
+// CHECK-VFP4-DIV-ARM: "target-features"="+armv7-a,+dsp,+hwdiv,+hwdiv-arm,+neon,+vfp4,-thumb-mode"
 
 // RUN: %clang_cc1 -triple thumbv7s-apple-ios7.0 -target-cpu cyclone -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-BASIC-V8
 // RUN: %clang_cc1 -triple thumbv8-linux-gnueabihf -target-cpu cortex-a32 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-BASIC-V8
@@ -27,37 +28,37 @@
 // RUN: %clang_cc1 -triple thumbv8-linux-gnueabihf -target-cpu exynos-m1 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-BASIC-V8
 // RUN: %clang_cc1 -triple thumbv8-linux-gnueabihf -target-cpu exynos-m2 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-BASIC-V8
 // RUN: %clang_cc1 -triple thumbv8-linux-gnueabihf -target-cpu exynos-m3 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-BASIC-V8
-// CHECK-BASIC-V8: "target-features"="+crc,+crypto,+dsp,+fp-armv8,+hwdiv,+hwdiv-arm,+neon,+thumb-mode"
+// CHECK-BASIC-V8: "target-features"="+armv8-a,+crc,+crypto,+dsp,+fp-armv8,+hwdiv,+hwdiv-arm,+neon,+thumb-mode"
 
 // RUN: %clang_cc1 -triple armv8-linux-gnueabi -target-cpu cortex-a53 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-BASIC-V8-ARM
-// CHECK-BASIC-V8-ARM: "target-features"="+crc,+crypto,+dsp,+fp-armv8,+hwdiv,+hwdiv-arm,+neon,-thumb-mode"
+// CHECK-BASIC-V8-ARM: "target-features"="+armv8-a,+crc,+crypto,+dsp,+fp-armv8,+hwdiv,+hwdiv-arm,+neon,-thumb-mode"
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-r5 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP3-D16-DIV
-// CHECK-VFP3-D16-DIV: "target-features"="+d16,+dsp,+hwdiv,+hwdiv-arm,+thumb-mode,+vfp3"
+// CHECK-VFP3-D16-DIV: "target-features"="+armv7-r,+d16,+dsp,+hwdiv,+hwdiv-arm,+thumb-mode,+vfp3"
 
 
 // RUN: %clang_cc1 -triple armv7-linux-gnueabi -target-cpu cortex-r4f -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP3-D16-THUMB-DIV
-// CHECK-VFP3-D16-THUMB-DIV: "target-features"="+d16,+dsp,+hwdiv,+vfp3,-thumb-mode"
+// CHECK-VFP3-D16-THUMB-DIV: "target-features"="+armv7-r,+d16,+dsp,+hwdiv,+vfp3,-thumb-mode"
 
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-r7 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP3-D16-FP16-DIV
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-r8 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP3-D16-FP16-DIV
-// CHECK-VFP3-D16-FP16-DIV: "target-features"="+d16,+dsp,+fp16,+hwdiv,+hwdiv-arm,+thumb-mode,+vfp3"
+// CHECK-VFP3-D16-FP16-DIV: "target-features"="+armv7-r,+d16,+dsp,+fp16,+hwdiv,+hwdiv-arm,+thumb-mode,+vfp3"
 
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-m4 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP4-D16-SP-THUMB-DIV
-// CHECK-VFP4-D16-SP-THUMB-DIV: "target-features"="+d16,+dsp,+fp-only-sp,+hwdiv,+thumb-mode,+vfp4"
+// CHECK-VFP4-D16-SP-THUMB-DIV: "target-features"="+armv7e-m,+d16,+dsp,+fp-only-sp,+hwdiv,+thumb-mode,+vfp4"
 
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-m7 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-VFP5-D16-THUMB-DIV
-// CHECK-VFP5-D16-THUMB-DIV: "target-features"="+d16,+dsp,+fp-armv8,+hwdiv,+thumb-mode"
+// CHECK-VFP5-D16-THUMB-DIV: "target-features"="+armv7e-m,+d16,+dsp,+fp-armv8,+hwdiv,+thumb-mode"
 
 
 // RUN: %clang_cc1 -triple armv7-linux-gnueabi -target-cpu cortex-r4 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-THUMB-DIV
-// CHECK-THUMB-DIV: "target-features"="+dsp,+hwdiv,-thumb-mode"
+// CHECK-THUMB-DIV: "target-features"="+armv7-r,+dsp,+hwdiv,-thumb-mode"
 
 // RUN: %clang_cc1 -triple thumbv7-linux-gnueabi -target-cpu cortex-m3 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-THUMB-DIV-M3
-// CHECK-THUMB-DIV-M3: "target-features"="+hwdiv,+thumb-mode"
+// CHECK-THUMB-DIV-M3: "target-features"="+armv7-m,+hwdiv,+thumb-mode"
 
 
 void foo() {}
Index: test/CodeGen/arm-no-movt.c
===================================================================
--- test/CodeGen/arm-no-movt.c
+++ test/CodeGen/arm-no-movt.c
@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -triple thumbv7-apple-ios5  -target-feature +no-movt -emit-llvm -o - %s | FileCheck -check-prefix=NO-MOVT %s
 // RUN: %clang_cc1 -triple thumbv7-apple-ios5 -emit-llvm -o - %s | FileCheck -check-prefix=MOVT %s
 
-// NO-MOVT: attributes #0 = { {{.*}} "target-features"="+no-movt,+thumb-mode"
-// MOVT-NOT: attributes #0 = { {{.*}} "target-features"="+no-movt,+thumb-mode"
+// NO-MOVT: attributes #0 = { {{.*}} "target-features"="+armv7-a,+no-movt,+thumb-mode"
+// MOVT-NOT: attributes #0 = { {{.*}} "target-features"="+armv7-a,+no-movt,+thumb-mode"
 
 int foo1(int a) { return a; }
Index: test/CodeGen/arm-long-calls.c
===================================================================
--- test/CodeGen/arm-long-calls.c
+++ test/CodeGen/arm-long-calls.c
@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -triple thumbv7-apple-ios5  -target-feature +long-calls -emit-llvm -o - %s | FileCheck -check-prefix=LONGCALL %s
 // RUN: %clang_cc1 -triple thumbv7-apple-ios5 -emit-llvm -o - %s | FileCheck -check-prefix=NOLONGCALL %s
 
-// LONGCALL: attributes #0 = { {{.*}} "target-features"="+long-calls,+thumb-mode"
-// NOLONGCALL-NOT: attributes #0 = { {{.*}} "target-features"="+long-calls,+thumb-mode"
+// LONGCALL: attributes #0 = { {{.*}} "target-features"="+armv7-a,+long-calls,+thumb-mode"
+// NOLONGCALL-NOT: attributes #0 = { {{.*}} "target-features"="+armv7-a,+long-calls,+thumb-mode"
 
 int foo1(int a) { return a; }
Index: lib/Basic/Targets/ARM.cpp
===================================================================
--- lib/Basic/Targets/ARM.cpp
+++ lib/Basic/Targets/ARM.cpp
@@ -335,9 +335,14 @@
     const std::vector<std::string> &FeaturesVec) const {
 
   std::vector<StringRef> TargetFeatures;
-  llvm::ARM::ArchKind Arch = llvm::ARM::parseArch(getTriple().getArchName());
+
+  // Map the base architecture to an appropriate target feature, so we don't
+  // rely on the target triple.
+  std::string ArchFeature = ("+" + llvm::ARM::getArchName(ArchKind)).str();
+  TargetFeatures.push_back(ArchFeature);
 
   // get default FPU features
+  llvm::ARM::ArchKind Arch = llvm::ARM::parseArch(getTriple().getArchName());
   unsigned FPUKind = llvm::ARM::getDefaultFPU(CPU, Arch);
   llvm::ARM::getFPUFeatures(FPUKind, TargetFeatures);

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[PATCH] D45240: [ARM] Compute a target feature which corresponds to the ARM version.

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