diff options
| -rw-r--r-- | llvm/include/llvm/Support/ARMBuildAttributes.h | 13 | ||||
| -rw-r--r-- | llvm/lib/Target/ARM/ARMAsmPrinter.cpp | 14 | ||||
| -rw-r--r-- | llvm/test/CodeGen/ARM/build-attributes.ll | 10 |
3 files changed, 37 insertions, 0 deletions
diff --git a/llvm/include/llvm/Support/ARMBuildAttributes.h b/llvm/include/llvm/Support/ARMBuildAttributes.h index 69732fc041e..16312004c87 100644 --- a/llvm/include/llvm/Support/ARMBuildAttributes.h +++ b/llvm/include/llvm/Support/ARMBuildAttributes.h @@ -146,6 +146,19 @@ enum { AllowNeon2 = 2, // SIMDv2 was permitted (Half-precision FP, MAC operations) AllowNeonARMv8 = 3, // ARM v8-A SIMD was permitted + // Tag_ABI_PCS_RW_data, (=15), uleb128 + AddressRWPCRel = 1, // Address RW static data PC-relative + AddressRWSBRel = 2, // Address RW static data SB-relative + AddressRWNone = 3, // No RW static data permitted + + // Tag_ABI_PCS_RO_data, (=14), uleb128 + AddressROPCRel = 1, // Address RO static data PC-relative + AddressRONone = 2, // No RO static data permitted + + // Tag_ABI_PCS_GOT_use, (=17), uleb128 + AddressDirect = 1, // Address imported data directly + AddressGOT = 2, // Address imported data indirectly (via GOT) + // Tag_ABI_FP_denormal, (=20), uleb128 PreserveFPSign = 2, // sign when flushed-to-zero is preserved diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp index 2b97e015bf4..55e9fe5f5c5 100644 --- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp @@ -671,6 +671,20 @@ void ARMAsmPrinter::emitAttributes() { ATS.emitFPU(ARM::VFPV2); } + if (TM.getRelocationModel() == Reloc::PIC_) { + // PIC specific attributes. + ATS.emitAttribute(ARMBuildAttrs::ABI_PCS_RW_data, + ARMBuildAttrs::AddressRWPCRel); + ATS.emitAttribute(ARMBuildAttrs::ABI_PCS_RO_data, + ARMBuildAttrs::AddressROPCRel); + ATS.emitAttribute(ARMBuildAttrs::ABI_PCS_GOT_use, + ARMBuildAttrs::AddressGOT); + } else { + // Allow direct addressing of imported data for all other relocation models. + ATS.emitAttribute(ARMBuildAttrs::ABI_PCS_GOT_use, + ARMBuildAttrs::AddressDirect); + } + // Signal various FP modes. if (!TM.Options.UnsafeFPMath) { ATS.emitAttribute(ARMBuildAttrs::ABI_FP_denormal, ARMBuildAttrs::Allowed); diff --git a/llvm/test/CodeGen/ARM/build-attributes.ll b/llvm/test/CodeGen/ARM/build-attributes.ll index 3e825e8d7d6..d75d55d0fa6 100644 --- a/llvm/test/CodeGen/ARM/build-attributes.ll +++ b/llvm/test/CodeGen/ARM/build-attributes.ll @@ -33,6 +33,11 @@ ; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi -mcpu=cortex-a7 -mattr=-vfp2,-vfp3,-vfp4,-neon | FileCheck %s --check-prefix=CORTEX-A7-NOFPU ; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi -mcpu=cortex-a7 -mattr=+vfp4,-neon | FileCheck %s --check-prefix=CORTEX-A7-FPUV4 ; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi -mcpu=cortex-a7 -mattr=+vfp4,,+d16,-neon | FileCheck %s --check-prefix=CORTEX-A7-FPUV4 +; RUN: llc < %s -mtriple=arm-none-linux-gnueabi -relocation-model=pic | FileCheck %s --check-prefix=RELOC-PIC +; RUN: llc < %s -mtriple=arm-none-linux-gnueabi -relocation-model=static | FileCheck %s --check-prefix=RELOC-OTHER +; RUN: llc < %s -mtriple=arm-none-linux-gnueabi -relocation-model=default | FileCheck %s --check-prefix=RELOC-OTHER +; RUN: llc < %s -mtriple=arm-none-linux-gnueabi -relocation-model=dynamic-no-pic | FileCheck %s --check-prefix=RELOC-OTHER +; RUN: llc < %s -mtriple=arm-none-linux-gnueabi | FileCheck %s --check-prefix=RELOC-OTHER ; XSCALE: .eabi_attribute 6, 5 ; XSCALE: .eabi_attribute 8, 1 @@ -453,6 +458,11 @@ ; CORTEX-A57-NOT: .eabi_attribute 44 ; CORTEX-A57: .eabi_attribute 68, 3 +; RELOC-PIC: .eabi_attribute 15, 1 +; RELOC-PIC: .eabi_attribute 16, 1 +; RELOC-PIC: .eabi_attribute 17, 2 +; RELOC-OTHER: .eabi_attribute 17, 1 + define i32 @f(i64 %z) { ret i32 0 } |
