[PPC64] Add support for clrbhrb, mfbhrbe, rfebb.
This patch adds support for the ISA 2.07 additions involving the
branch history rolling buffer and event-based branching. These will
not be used by typical applications, so built-in support is not
required. They will only be available via inline assembly.
Assembly/disassembly tests are included in the patch.
llvm-svn: 238032
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
index 81589c8..c93de43 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -275,6 +275,16 @@
/// operand identifies the operating system entry point.
SC,
+ /// CHAIN = CLRBHRB CHAIN - Clear branch history rolling buffer.
+ CLRBHRB,
+
+ /// GPRC, CHAIN = MFBHRBE CHAIN, Entry, Dummy - Move from branch
+ /// history rolling buffer entry.
+ MFBHRBE,
+
+ /// CHAIN = RFEBB CHAIN, State - Return from event-based branch.
+ RFEBB,
+
/// VSRC, CHAIN = XXSWAPD CHAIN, VSRC - Occurs only for little
/// endian. Maps to an xxswapd instruction that corrects an lxvd2x
/// or stxvd2x instruction. The chain is necessary because the