ARM MachO: sort out isTargetDarwin/isTargetIOS/... checks.

The ARM backend has been using most of the MachO related subtarget
checks almost interchangeably, and since the only target it's had to
run on has been IOS (which is all three of MachO, Darwin and IOS) it's
worked out OK so far.

But we'd like to support embedded targets under the "*-*-none-macho"
triple, which means everything starts falling apart and inconsistent
behaviours emerge.

This patch should pick a reasonably sensible set of behaviours for the
new triple (and any others that come along, with luck). Some choices
were debatable (notably FP == r7 or r11), but we can revisit those
later when deficiencies become apparent.

llvm-svn: 198617

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Target/ARM/ARMInstrThumb.td b/llvm/lib/Target/ARM/ARMInstrThumb.td
index f6d233a39c5..2130145bef2 100644
--- a/llvm/lib/Target/ARM/ARMInstrThumb.td
+++ b/llvm/lib/Target/ARM/ARMInstrThumb.td
@@ -545,15 +545,15 @@ let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
                      (tBX GPR:$dst, (ops 14, zero_reg))>,
                      Requires<[IsThumb]>, Sched<[WriteBr]>;
   }
-  // tTAILJMPd: IOS version uses a Thumb2 branch (no Thumb1 tail calls
-  // on IOS), so it's in ARMInstrThumb2.td.
-  // Non-IOS version:
+  // tTAILJMPd: MachO version uses a Thumb2 branch (no Thumb1 tail calls
+  // on MachO), so it's in ARMInstrThumb2.td.
+  // Non-MachO version:
   let Uses = [SP] in {
     def tTAILJMPdND : tPseudoExpand<(outs),
                    (ins t_brtarget:$dst, pred:$p),
                    4, IIC_Br, [],
                    (tB t_brtarget:$dst, pred:$p)>,
-                 Requires<[IsThumb, IsNotIOS]>, Sched<[WriteBr]>;
+                 Requires<[IsThumb, IsNotMachO]>, Sched<[WriteBr]>;
   }
 }