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llvm-project/llvm/test/CodeGen/RISCV/init-array.ll

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[RISCV] Use init_array instead of ctors for RISCV target, by default Summary: LLVM defaults to the newer .init_array/.fini_array scheme for static constructors rather than the less desirable .ctors/.dtors (the UseCtors flag defaults to false). This wasn't being respected in the RISC-V backend because it fails to call TargetLoweringObjectFileELF::InitializeELF with the the appropriate flag for UseInitArray. This patch fixes this by implementing RISCVELFTargetObjectFile and overriding its Initialize method to call InitializeELF(TM.Options.UseInitArray). Reviewers: asb, apazos Reviewed By: asb Subscribers: mgorny, rbar, johnrusso, simoncook, jordy.potman.lists, sabuasal, niosHD, kito-cheng, shiva0217, llvm-commits Differential Revision: https://reviews.llvm.org/D44750 llvm-svn: 328433
2018-03-25 02:37:19 +08:00
; RUN: llc -mtriple=riscv32-unknown-linux-gnu -verify-machineinstrs -o - %s \
; RUN: | FileCheck --check-prefix=INITARRAY %s
; RUN: llc -mtriple=riscv32-unknown-elf -verify-machineinstrs -o - %s \
; RUN: | FileCheck --check-prefix=INITARRAY %s
; RUN: llc -mtriple=riscv64-unknown-linux-gnu -verify-machineinstrs -o - %s \
; RUN: | FileCheck --check-prefix=INITARRAY %s
; RUN: llc -mtriple=riscv64-unknown-elf -verify-machineinstrs -o - %s \
; RUN: | FileCheck --check-prefix=INITARRAY %s
; RUN: llc -mtriple=riscv32-unknown-linux-gnu -verify-machineinstrs -use-ctors -o - %s \
; RUN: | FileCheck --check-prefix=CTOR %s
; RUN: llc -mtriple=riscv32-unknown-elf -verify-machineinstrs -use-ctors -o - %s \
; RUN: | FileCheck --check-prefix=CTOR %s
; RUN: llc -mtriple=riscv64-unknown-linux-gnu -verify-machineinstrs -use-ctors -o - %s \
; RUN: | FileCheck --check-prefix=CTOR %s
; RUN: llc -mtriple=riscv64-unknown-elf -verify-machineinstrs -use-ctors -o - %s \
; RUN: | FileCheck --check-prefix=CTOR %s
define internal void @_GLOBAL__I_a() section ".text.startup" {
ret void
}
[IR] Disallow llvm.global_ctors and llvm.global_dtors of the 2-field form in textual format The 3-field form was introduced by D3499 in 2014 and the legacy 2-field form was planned to be removed in LLVM 4.0 For the textual format, this patch migrates the existing 2-field form to use the 3-field form and deletes the compatibility code. test/Verifier/global-ctors-2.ll checks we have a friendly error message. For bitcode, lib/IR/AutoUpgrade UpgradeGlobalVariables will upgrade the 2-field form (add i8* null as the third field). Reviewed By: rnk, dexonsmith Differential Revision: https://reviews.llvm.org/D61547 llvm-svn: 360742
2019-05-15 10:35:32 +08:00
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__I_a, i8* null }]
[RISCV] Use init_array instead of ctors for RISCV target, by default Summary: LLVM defaults to the newer .init_array/.fini_array scheme for static constructors rather than the less desirable .ctors/.dtors (the UseCtors flag defaults to false). This wasn't being respected in the RISC-V backend because it fails to call TargetLoweringObjectFileELF::InitializeELF with the the appropriate flag for UseInitArray. This patch fixes this by implementing RISCVELFTargetObjectFile and overriding its Initialize method to call InitializeELF(TM.Options.UseInitArray). Reviewers: asb, apazos Reviewed By: asb Subscribers: mgorny, rbar, johnrusso, simoncook, jordy.potman.lists, sabuasal, niosHD, kito-cheng, shiva0217, llvm-commits Differential Revision: https://reviews.llvm.org/D44750 llvm-svn: 328433
2018-03-25 02:37:19 +08:00
;INITARRAY: section .init_array
;INITARRAY-NOT: .section .ctors
;CTOR: .section .ctors
;CTOR-NOT: section .init_array