Provide an implementation of getNoopForMachoTarget for PPC, otherwise

empty functions will assert in the MC object writer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215238 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joerg Sonnenberger 2014-08-08 19:13:23 +00:00
parent 0980ef248e
commit f0b70e2fbc
3 changed files with 10 additions and 2 deletions

View File

@ -331,6 +331,11 @@ void PPCInstrInfo::insertNoop(MachineBasicBlock &MBB,
BuildMI(MBB, MI, DL, get(Opcode));
}
/// getNoopForMachoTarget - Return the noop instruction to use for a noop.
void PPCInstrInfo::getNoopForMachoTarget(MCInst &NopInst) const {
NopInst.setOpcode(PPC::NOP);
}
// Branch analysis.
// Note: If the condition register is set to CTR or CTR8 then this is a
// BDNZ (imm == 1) or BDZ (imm == 0) branch.

View File

@ -228,6 +228,8 @@ public:
/// instruction may be. This returns the maximum number of bytes.
///
unsigned GetInstSizeInBytes(const MachineInstr *MI) const;
void getNoopForMachoTarget(MCInst &NopInst) const override;
};
}

View File

@ -1,5 +1,6 @@
; RUN: llc < %s -mtriple=powerpc-apple-darwin | FileCheck -check-prefix=CHECK-NO-FP %s
; RUN: llc < %s -mtriple=powerpc-apple-darwin -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
; RUN: llc < %s -mtriple=powerpc-netbsd -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
define void @func() {
entry:
@ -8,5 +9,5 @@ entry:
; CHECK-NO-FP: _func:
; CHECK-NO-FP: nop
; CHECK-FP: _func:
; CHECK-FP: nop
; CHECK-FP: {{_?}}func:
; CHECK-FP: nop {{[;#]}} avoids zero-length function