Exapnd br_jt into indirect branch. Provide pattern for indirect branches.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75983 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/SystemZ/SystemZISelLowering.cpp b/lib/Target/SystemZ/SystemZISelLowering.cpp
index 87ea5c3ddaa501bf4dcf7ccaa43755ae025cb545..498aec8925f06a6fc106756c12c990542df4c71b 100644 (file)
--- a/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -62,6 +62,7 @@ SystemZTargetLowering::SystemZTargetLowering(SystemZTargetMachine &tm) :
 
   setOperationAction(ISD::RET,              MVT::Other, Custom);
 
+  setOperationAction(ISD::BR_JT,            MVT::Other, Expand);
   setOperationAction(ISD::BRCOND,           MVT::Other, Expand);
   setOperationAction(ISD::BR_CC,            MVT::i32, Custom);
   setOperationAction(ISD::BR_CC,            MVT::i64, Custom);

diff --git a/lib/Target/SystemZ/SystemZInstrInfo.td b/lib/Target/SystemZ/SystemZInstrInfo.td
index 8969bdfe0b65e3a15fb248f5720ba1afac7806b5..469fcfe6f01390a0a07bfa64a9c2e64880945053 100644 (file)
--- a/lib/Target/SystemZ/SystemZInstrInfo.td
+++ b/lib/Target/SystemZ/SystemZInstrInfo.td
@@ -99,6 +99,12 @@ let isBranch = 1, isTerminator = 1 in {
   let isBarrier = 1 in
     def JMP  : Pseudo<(outs), (ins brtarget:$dst), "j\t{$dst}", [(br bb:$dst)]>;
 
+  let isBarrier = 1, isIndirectBranch = 1 in {
+    def JMPr   : Pseudo<(outs), (ins GR64:$dst), "br\t{$dst}", [(brind GR64:$dst)]>;
+    // FIXME: displacement here is 12 bits
+    def JMPrri : Pseudo<(outs), (ins rriaddr:$dst), "b\t{$dst}", [(brind rriaddr:$dst)]>;
+  }
+
   let Uses = [PSW] in {
     def JE  : Pseudo<(outs), (ins brtarget:$dst),
                      "je\t$dst",