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path: root/lib/Target/SystemZ/SystemZRegisterInfo.cpp
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2010-08-26Simplify eliminateFrameIndex() interface back down now that PEI doesn't needJim Grosbach
to try to re-use scavenged frame index reference registers. rdar://8277890 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112241 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-02cleanupRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105322 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14SystemZ really does mean "has calls" and not just "adjusts stack." Go ahead andBill Wendling
replace the check with the appropriate predicate. Modify the testcase to reflect the correct code. (It should be saving callee-saved registers on the stack allocated by the calling fuction.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103829 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe whatBill Wendling
the variable actually tracks. N.B., several back-ends are using "HasCalls" as being synonymous for something that adjusts the stack. This isn't 100% correct and should be looked into. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103802 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21Implement -disable-non-leaf-fp-elim which disable frame pointer eliminationEvan Cheng
optimization for non-leaf functions. This will be hooked up to gcc's -momit-leaf-frame-pointer option. rdar://7886181 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06Fix a number of clang -Wsign-compare warnings that didn't have an obviousJohn McCall
solution. The only reason these don't fire with gcc-4.2 is that gcc turns off part of -Wsign-compare in C++ on accident. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02use DebugLoc default ctor instead of DebugLoc::getUnknownLoc()Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100214 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09Change the Value argument to eliminateFrameIndex to a type-tagged value. ThisJim Grosbach
is preparatory to having PEI's scavenged frame index value reuse logic properly distinguish types of frame values (e.g., whether the value is stack-pointer relative or frame-pointer relative). No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98086 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26constify a method argument.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94612 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03improve portability to avoid conflicting with std::next in c++'0x.Chris Lattner
Patch by Howard Hinnant! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90365 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-12Make the MachineFunction argument of getFrameRegister const.David Greene
This also fixes a build error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Add register-reuse to frame-index register scavenging. When a target usesJim Grosbach
a virtual register to eliminate a frame index, it can return that register and the constant stored there to PEI to track. When scavenging to allocate for those registers, PEI then tracks the last-used register and value, and if it is still available and matches the value for the next index, reuses the existing value rather and removes the re-materialization instructions. Fancier tracking and adjustment of scavenger allocations to keep more values live for longer is possible, but not yet implemented and would likely be better done via a different, less special-purpose, approach to the problem. eliminateFrameIndex() is modified so the target implementations can return the registers they wish to be tracked for reuse. ARM Thumb1 implements and utilizes the new mechanism. All other targets are simply modified to adjust for the changed eliminateFrameIndex() prototype. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83467 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-06Remove some unused variables and methods warned about byDuncan Sands
icc (#177, partial). Patch by Erick Tryzelaar. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81106 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Handle long-disp stuff more consistentlyAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76059 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Fix incomin arg stack frame offset in case we need to generate stack frameAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76049 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Handle FP callee-saved regsAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76029 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Add FP regsAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76013 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Missed part of prev. patchAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76008 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Another attempt to fix prologue emissionAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76007 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Properly generate stack frameAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Do not forget to save R15 when we allocate stack frameAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75995 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Stupid typoAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75992 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Fix fallout from 12-bit stuff landing: decide whether 20 bit displacements ↵Anton Korobeynikov
are needed during elimination of frame indexes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75989 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16We already have reserved call frame regardless whether variable sized frame ↵Anton Korobeynikov
objects were present or not git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Implement dynamic allocasAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75985 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Emit callee-saved regs spills / restoresAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75943 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Some preliminary call loweringAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75941 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Prologue / epilogue emissionAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75940 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Add simple frame index eliminationAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75939 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Add 32 bit subregsAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75923 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Let's start another backend :)Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75909 91177308-0d34-0410-b5e6-96231b3b80d8
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