Fix wrong usages of CTR/MCTR where CTR8/MCTR8 was meant.

- Check for MTCTR8 in addition to MTCTR when looking up a hazard.

- When lowering an indirect call use CTR8 when targeting 64bit.

- Introduce BCTR8 that uses CTR8 and use it on 64bit when expanding ISD::BRIND.

The last change fixes PR8487. With those changes, we are able to compile a
running "ls" and "sh" on FreeBSD/PowerPC64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132552 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 3 deletions

diff --git a/lib/Target/PowerPC/PPCInstr64Bit.td b/lib/Target/PowerPC/PPCInstr64Bit.td
index 93cace0c54..e88ad378cc 100644
--- a/lib/Target/PowerPC/PPCInstr64Bit.td
+++ b/lib/Target/PowerPC/PPCInstr64Bit.td
@@ -190,10 +190,15 @@ def TCRETURNri8 : Pseudo<(outs), (ins CTRRC8:$dst, i32imm:$offset, variable_ops)
 
 
 let isTerminator = 1, isBarrier = 1, PPC970_Unit = 7, isBranch = 1,
-    isIndirectBranch = 1, isCall = 1, isReturn = 1, Uses = [CTR, RM] in
-def TAILBCTR8 : XLForm_2_ext<19, 528, 20, 0, 0, (outs), (ins), "bctr", BrB, []>,
-    Requires<[In64BitMode]>;
+    isIndirectBranch = 1, isCall = 1, Uses = [CTR8, RM] in {
+  let isReturn = 1 in {
+    def TAILBCTR8 : XLForm_2_ext<19, 528, 20, 0, 0, (outs), (ins), "bctr", BrB, []>,
+        Requires<[In64BitMode]>;
+  }
 
+  def BCTR8 : XLForm_2_ext<19, 528, 20, 0, 0, (outs), (ins), "bctr", BrB, []>,
+      Requires<[In64BitMode]>;
+}
 
 
 let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, PPC970_Unit = 7,