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* [Stackmaps] Make ithe frame-pointer required for stackmaps.Juergen Ributzka2014-10-021-1/+1
| | | | | | | | | Do not eliminate the frame pointer if there is a stackmap or patchpoint in the function. All stackmap references should be FP relative. This fixes PR21107. llvm-svn: 218920
* [X86] Add comments to clarify some non-obvious lines in the stackmap-nops.llLang Hames2014-07-251-0/+3
| | | | | | | | testcases. Based on code review from Philip Reames. Thanks Philip! llvm-svn: 213923
* [X86] Optimize stackmap shadows on X86.Lang Hames2014-07-241-0/+1
| | | | | | | | | | | | | | | | | | | This patch minimizes the number of nops that must be emitted on X86 to satisfy stackmap shadow constraints. To minimize the number of nops inserted, the X86AsmPrinter now records the size of the most recent stackmap's shadow in the StackMapShadowTracker class, and tracks the number of instruction bytes emitted since the that stackmap instruction was encountered. Padding is emitted (if it is required at all) immediately before the next stackmap/patchpoint instruction, or at the end of the basic block. This optimization should reduce code-size and improve performance for people using the llvm stackmap intrinsic on X86. <rdar://problem/14959522> llvm-svn: 213892
* Grow the stackmap/patchpoint format to hold 64-bit IDs.Andrew Trick2013-12-131-32/+32
| | | | llvm-svn: 197255
* [Stackmap] Emit multi-byte nops for X86.Juergen Ributzka2013-12-041-0/+230
llvm-svn: 196334
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