diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMFrameLowering.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMFrameLowering.cpp b/llvm/lib/Target/ARM/ARMFrameLowering.cpp index 4eafd82..a52e497 100644 --- a/llvm/lib/Target/ARM/ARMFrameLowering.cpp +++ b/llvm/lib/Target/ARM/ARMFrameLowering.cpp @@ -43,6 +43,14 @@ ARMFrameLowering::ARMFrameLowering(const ARMSubtarget &sti) : TargetFrameLowering(StackGrowsDown, sti.getStackAlignment(), 0, 4), STI(sti) {} +bool ARMFrameLowering::noFramePointerElim(const MachineFunction &MF) const { + // iOS always has a FP for backtracking, force other targets to keep their FP + // when doing FastISel. The emitted code is currently superior, and in cases + // like test-suite's lencod FastISel isn't quite correct when FP is eliminated. + return TargetFrameLowering::noFramePointerElim(MF) || + MF.getSubtarget<ARMSubtarget>().useFastISel(); +} + /// hasFP - Return true if the specified function should have a dedicated frame /// pointer register. This is true if the function has variable sized allocas /// or if frame pointer elimination is disabled. |