[llvm] r217611 - Provide an implementation of getNoopForMachoTarget for SPARC.

[Rafael Espíndola]

Has this been approved?

On 11 September 2014 13:40, Brad Smith <brad at comstyle.com> wrote:
> Author: brad
> Date: Thu Sep 11 12:40:51 2014
> New Revision: 217611
>
> URL: http://llvm.org/viewvc/llvm-project?rev=217611&view=rev
> Log:
> Provide an implementation of getNoopForMachoTarget for SPARC.
>
> Added:
>     llvm/trunk/test/CodeGen/SPARC/empty-functions.ll
> Modified:
>     llvm/trunk/lib/Target/Sparc/SparcInstrInfo.cpp
>     llvm/trunk/lib/Target/Sparc/SparcInstrInfo.h
>
> Modified: llvm/trunk/lib/Target/Sparc/SparcInstrInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcInstrInfo.cpp?rev=217611&r1=217610&r2=217611&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/Sparc/SparcInstrInfo.cpp (original)
> +++ llvm/trunk/lib/Target/Sparc/SparcInstrInfo.cpp Thu Sep 11 12:40:51 2014
> @@ -37,6 +37,11 @@ SparcInstrInfo::SparcInstrInfo(SparcSubt
>      RI(ST), Subtarget(ST) {
>  }
>
> +/// getNoopForMachoTarget - Return the noop instruction to use for a noop.
> +void SparcInstrInfo::getNoopForMachoTarget(MCInst &NopInst) const {
> +  NopInst.setOpcode(SP::NOP);
> +}
> +
>  /// isLoadFromStackSlot - If the specified machine instruction is a direct
>  /// load from a stack slot, return the virtual or physical register number of
>  /// the destination along with the FrameIndex of the loaded stack slot.  If
>
> Modified: llvm/trunk/lib/Target/Sparc/SparcInstrInfo.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcInstrInfo.h?rev=217611&r1=217610&r2=217611&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/Sparc/SparcInstrInfo.h (original)
> +++ llvm/trunk/lib/Target/Sparc/SparcInstrInfo.h Thu Sep 11 12:40:51 2014
> @@ -93,6 +93,8 @@ public:
>                              const TargetRegisterInfo *TRI) const override;
>
>    unsigned getGlobalBaseReg(MachineFunction *MF) const;
> +
> +  void getNoopForMachoTarget(MCInst &NopInst) const override;
>  };
>
>  }
>
> Added: llvm/trunk/test/CodeGen/SPARC/empty-functions.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/SPARC/empty-functions.ll?rev=217611&view=auto
> ==============================================================================
> --- llvm/trunk/test/CodeGen/SPARC/empty-functions.ll (added)
> +++ llvm/trunk/test/CodeGen/SPARC/empty-functions.ll Thu Sep 11 12:40:51 2014
> @@ -0,0 +1,8 @@
> +; RUN: llc < %s -mtriple=sparc-unknown-openbsd -disable-fp-elim | FileCheck -check-prefix=CHECK-FP-LABEL %s
> +
> +define void @func() {
> +entry:
> +  unreachable
> +}
> +; CHECK-FP-LABEL:      {{_?}}func:
> +; CHECK-FP-LABEL: nop {{[;!]}} avoids zero-length function
>
>
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