[PATCH] D14778: [PPC64] Enable shrink wrapping for PPC64 LE.

[Quentin Colombet via llvm-commits]

qcolombet added inline comments.

================
Comment at: lib/Target/PowerPC/PPCFrameLowering.cpp:581
@@ +580,3 @@
+    MachineBasicBlock::iterator MBBI = MBB->getFirstTerminator();
+    // If no terminator, back iterator up to previous instruction
+    if (MBBI == MBB->end())
----------------
Period.

================
Comment at: lib/Target/PowerPC/PPCFrameLowering.cpp:585
@@ +584,3 @@
+
+    if (MBBI != MBB->begin())
+      RS.forward(MBBI);
----------------
You still need to check that “begin” is not the terminator, otherwise, you’ll get the available register after the terminator, not before.


http://reviews.llvm.org/D14778