Index: lib/Target/ARM/ARMAsmPrinter.h =================================================================== --- lib/Target/ARM/ARMAsmPrinter.h +++ lib/Target/ARM/ARMAsmPrinter.h @@ -51,6 +51,11 @@ /// labels used for ARMv4t thumb code to make register indirect calls. SmallVector, 4> ThumbIndirectPads; + /// OptimizationGoals - Maintain a combined optimization goal for all + /// functions in a module: one of Tag_ABI_optimization_goals values, + /// -1 if uninitialized, 0 if conflicting goals + int OptimizationGoals; + public: explicit ARMAsmPrinter(TargetMachine &TM, std::unique_ptr Streamer); Index: lib/Target/ARM/ARMAsmPrinter.cpp =================================================================== --- lib/Target/ARM/ARMAsmPrinter.cpp +++ lib/Target/ARM/ARMAsmPrinter.cpp @@ -60,7 +60,7 @@ ARMAsmPrinter::ARMAsmPrinter(TargetMachine &TM, std::unique_ptr Streamer) : AsmPrinter(TM, std::move(Streamer)), AFI(nullptr), MCP(nullptr), - InConstantPool(false) {} + InConstantPool(false), OptimizationGoals(-1) {} void ARMAsmPrinter::EmitFunctionBodyEnd() { // Make sure to terminate any constant pools that were at the end @@ -106,9 +106,38 @@ Subtarget = &MF.getSubtarget(); SetupMachineFunction(MF); + const Function* F = MF.getFunction(); + const TargetMachine& TM = MF.getTarget(); + + // Calculate this function's optimization goal. + unsigned OptimizationGoal; + if (F->hasFnAttribute(Attribute::OptimizeNone)) + // For best debugging illusion, speed and small size sacrificed + OptimizationGoal = 6; + else if (F->optForMinSize()) + // Aggressively for small size, speed and debug illusion sacrificed + OptimizationGoal = 4; + else if (F->optForSize()) + // For small size, but speed and debugging illusion preserved + OptimizationGoal = 3; + else if (TM.getOptLevel() == CodeGenOpt::Aggressive) + // Aggressively for speed, small size and debug illusion sacrificed + OptimizationGoal = 2; + else if (TM.getOptLevel() > CodeGenOpt::None) + // For speed, but small size and good debug illusion preserved + OptimizationGoal = 1; + else // TM.getOptLevel() == CodeGenOpt::None + // For good debugging, but speed and small size preserved + OptimizationGoal = 5; + + // Combine a new optimization goal with existing ones. + if (OptimizationGoals == -1) // uninitialized goals + OptimizationGoals = OptimizationGoal; + else if (OptimizationGoals != OptimizationGoal) // conflicting goals + OptimizationGoals = 0; if (Subtarget->isTargetCOFF()) { - bool Internal = MF.getFunction()->hasInternalLinkage(); + bool Internal = F->hasInternalLinkage(); COFF::SymbolStorageClass Scl = Internal ? COFF::IMAGE_SYM_CLASS_STATIC : COFF::IMAGE_SYM_CLASS_EXTERNAL; int Type = COFF::IMAGE_SYM_DTYPE_FUNCTION << COFF::SCT_COMPLEX_TYPE_SHIFT; @@ -506,6 +535,16 @@ // generates code that does this, it is always safe to set. OutStreamer->EmitAssemblerFlag(MCAF_SubsectionsViaSymbols); } + + // The last attribute to be emitted is ABI_optimization_goals + MCTargetStreamer &TS = *OutStreamer->getTargetStreamer(); + ARMTargetStreamer &ATS = static_cast(TS); + + if (OptimizationGoals > 0) + ATS.emitAttribute(ARMBuildAttrs::ABI_optimization_goals, OptimizationGoals); + OptimizationGoals = -1; + + ATS.finishAttributeSection(); } //===----------------------------------------------------------------------===// @@ -798,8 +837,6 @@ else if (STI.hasVirtualization()) ATS.emitAttribute(ARMBuildAttrs::Virtualization_use, ARMBuildAttrs::AllowVirtualization); - - ATS.finishAttributeSection(); } //===----------------------------------------------------------------------===// Index: test/CodeGen/ARM/build-attributes-optimization-minsize.ll =================================================================== --- /dev/null +++ test/CodeGen/ARM/build-attributes-optimization-minsize.ll @@ -0,0 +1,18 @@ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 | FileCheck %s + +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ + +; CHECK: .eabi_attribute 30, 4 @ Tag_ABI_optimization_goals +; CHECK-OBJ: TagName: ABI_optimization_goals +; CHECK-OBJ-NEXT: Description: Aggressive Size + +define i32 @f(i64 %z) #0 { + ret i32 0 +} + +attributes #0 = { minsize optsize } + Index: test/CodeGen/ARM/build-attributes-optimization-mixed.ll =================================================================== --- /dev/null +++ test/CodeGen/ARM/build-attributes-optimization-mixed.ll @@ -0,0 +1,23 @@ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 | FileCheck %s + +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s + +; CHECK-NOT: .eabi_attribute 30 +; CHECK-NOT: Tag_ABI_optimization_goals + +define i32 @f(i64 %z) #0 { + ret i32 0 +} + +define i32 @g(i64 %z) #1 { + ret i32 1 +} + +attributes #0 = { noinline optnone } + +attributes #1 = { minsize optsize } + Index: test/CodeGen/ARM/build-attributes-optimization-optnone.ll =================================================================== --- /dev/null +++ test/CodeGen/ARM/build-attributes-optimization-optnone.ll @@ -0,0 +1,18 @@ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 | FileCheck %s + +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ + +; CHECK: .eabi_attribute 30, 6 @ Tag_ABI_optimization_goals +; CHECK-OBJ: TagName: ABI_optimization_goals +; CHECK-OBJ-NEXT: Description: Best Debugging + +define i32 @f(i64 %z) #0 { + ret i32 0 +} + +attributes #0 = { noinline optnone } + Index: test/CodeGen/ARM/build-attributes-optimization-optsize.ll =================================================================== --- /dev/null +++ test/CodeGen/ARM/build-attributes-optimization-optsize.ll @@ -0,0 +1,18 @@ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 | FileCheck %s +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 | FileCheck %s + +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ + +; CHECK: .eabi_attribute 30, 3 @ Tag_ABI_optimization_goals +; CHECK-OBJ: TagName: ABI_optimization_goals +; CHECK-OBJ-NEXT: Description: Size + +define i32 @f(i64 %z) #0 { + ret i32 0 +} + +attributes #0 = { optsize } + Index: test/CodeGen/ARM/build-attributes-optimization.ll =================================================================== --- /dev/null +++ test/CodeGen/ARM/build-attributes-optimization.ll @@ -0,0 +1,23 @@ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 | FileCheck %s --check-prefix=NONE +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 | FileCheck %s --check-prefix=SPEED +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 | FileCheck %s --check-prefix=MAXSPEED + +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=NONE-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=SPEED-OBJ +; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=MAXSPEED-OBJ + +; NONE: .eabi_attribute 30, 5 @ Tag_ABI_optimization_goals +; SPEED: .eabi_attribute 30, 1 @ Tag_ABI_optimization_goals +; MAXSPEED: .eabi_attribute 30, 2 @ Tag_ABI_optimization_goals + +; NONE-OBJ: TagName: ABI_optimization_goals +; NONE-OBJ-NEXT: Description: Debugging +; SPEED-OBJ: TagName: ABI_optimization_goals +; SPEED-OBJ-NEXT: Description: Speed +; MAXSPEED-OBJ: TagName: ABI_optimization_goals +; MAXSPEED-OBJ-NEXT: Description: Aggressive Speed + +define i32 @f(i64 %z) { + ret i32 0 +} + Index: test/MC/ARM/data-in-code.ll =================================================================== --- test/MC/ARM/data-in-code.ll +++ test/MC/ARM/data-in-code.ll @@ -53,13 +53,6 @@ ;; ARM: Symbol { ;; ARM: Name: $d -;; ARM-NEXT: Value: 0 -;; ARM-NEXT: Size: 0 -;; ARM-NEXT: Binding: Local -;; ARM-NEXT: Type: None - -;; ARM: Symbol { -;; ARM: Name: $d ;; ARM-NEXT: Value: 0x{{[0-9A-F]+}} ;; ARM-NEXT: Size: 0 ;; ARM-NEXT: Binding: Local @@ -77,10 +70,17 @@ ;; ARM-NEXT: Section: .ARM.exidx ;; ARM-NEXT: } +;; ARM: Symbol { +;; ARM: Name: $d +;; ARM-NEXT: Value: 0 +;; ARM-NEXT: Size: 0 +;; ARM-NEXT: Binding: Local +;; ARM-NEXT: Type: None + ;; ARM-NOT: ${{[atd]}} ;; TMB: Symbol { -;; TMB: Name: $d.2 +;; TMB: Name: $d.1 ;; TMB-NEXT: Value: 0x{{[0-9A-F]+}} ;; TMB-NEXT: Size: 0 ;; TMB-NEXT: Binding: Local