[llvm-commits] [llvm] r121238 - /llvm/trunk/lib/Target/ARM/ARMFrameInfo.cpp
Evan Cheng
evan.cheng at apple.com
Tue Dec 7 22:29:02 PST 2010
Author: evancheng
Date: Wed Dec 8 00:29:02 2010
New Revision: 121238
URL: http://llvm.org/viewvc/llvm-project?rev=121238&view=rev
Log:
Add comments.
Modified:
llvm/trunk/lib/Target/ARM/ARMFrameInfo.cpp
Modified: llvm/trunk/lib/Target/ARM/ARMFrameInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMFrameInfo.cpp?rev=121238&r1=121237&r2=121238&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMFrameInfo.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMFrameInfo.cpp Wed Dec 8 00:29:02 2010
@@ -529,10 +529,11 @@
if (isKill)
MBB.addLiveIn(Reg);
- if (NoGap && LastReg) {
- if (LastReg != Reg-1)
- break;
- }
+ // If NoGap is true, pop consecutive registers and then leave the rest
+ // for other instructions. e.g.
+ // vpush {d8, d10, d11} -> vpush {d8}, vpop {d10, d11}
+ if (NoGap && LastReg && LastReg != Reg-1)
+ break;
LastReg = Reg;
Regs.push_back(std::make_pair(Reg, isKill));
}
@@ -574,10 +575,12 @@
DeleteRet = true;
}
- if (NoGap && LastReg) {
- if (LastReg != Reg-1)
- break;
- }
+ // If NoGap is true, pop consecutive registers and then leave the rest
+ // for other instructions. e.g.
+ // vpop {d8, d10, d11} -> vpop {d8}, vpop {d10, d11}
+ if (NoGap && LastReg && LastReg != Reg-1)
+ break;
+
LastReg = Reg;
Regs.push_back(Reg);
}
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