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| author | Chris Lattner <sabre@nondot.org> | 2005-05-15 03:09:58 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-05-15 03:09:58 +0000 |
| commit | 4fc997941dde5c11e91a28c9b5b8fa331d053a18 (patch) | |
| tree | 31d3ba6c4a362c0d0aa85966250ab7374b2cbec3 /lib/CodeGen/PrologEpilogInserter.cpp | |
| parent | 0dede079e7c2ab3b39bf3dc6e37039501a1eca07 (diff) | |
| download | llvm-4fc997941dde5c11e91a28c9b5b8fa331d053a18.tar.gz llvm-4fc997941dde5c11e91a28c9b5b8fa331d053a18.tar.bz2 llvm-4fc997941dde5c11e91a28c9b5b8fa331d053a18.tar.xz | |
When inserting callee-save register reloads, make sure to skip over any
terminator instructions before the 'ret' in case the target has a
multi-instruction return sequence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22041 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/PrologEpilogInserter.cpp')
| -rw-r--r-- | lib/CodeGen/PrologEpilogInserter.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp index 37e40c90a9..c5bc2337fd 100644 --- a/lib/CodeGen/PrologEpilogInserter.cpp +++ b/lib/CodeGen/PrologEpilogInserter.cpp @@ -211,6 +211,14 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) { MBB = FI; I = MBB->end(); --I; + // Skip over all terminator instructions, which are part of the return + // sequence. + MachineBasicBlock::iterator I2 = I; + while (I2 != MBB->begin() && TII.isTerminatorInstr((--I2)->getOpcode())) + I = I2; + + // Restore all registers immediately before the return and any terminators + // that preceed it. for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) { RegInfo->loadRegFromStackSlot(*MBB, I, RegsToSave[i], StackSlots[i]); assert(I != MBB->begin() && |