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llvm-project/llvm/lib/Transforms
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Manman Ren edc60376ed SimplifyCFG: fix a bug in switch to table conversion 
We use gep to access the global array "switch.table", and the table index
should be treated as unsigned. When the highest bit is 1, this commit
zero-extends the index to an integer type with larger size.

For a switch on i2, we used to generate:
%switch.tableidx = sub i2 %0, -2
getelementptr inbounds [4 x i64]* @switch.table, i32 0, i2 %switch.tableidx

It is incorrect when %switch.tableidx is 2 or 3. The fix is to generate
%switch.tableidx = sub i2 %0, -2
%switch.tableidx.zext = zext i2 %switch.tableidx to i3
getelementptr inbounds [4 x i64]* @switch.table, i32 0, i3 %switch.tableidx.zext

rdar://17735071

llvm-svn: 213815
 		2014-07-23 23:13:23 +00:00
..
Hello [CMake] Add LLVM_LINK_COMPONENTS to loadable modules, LLVMHello and BugpointPasses, on Win32. 2014-07-13 13:36:48 +00:00
IPO ArgPromo+DebugInfo: Handle updating debug info over multiple applications of argument promotion. 2014-07-23 22:09:29 +00:00
InstCombine This patch implements optimization as mentioned in PR19753: Optimize comparisons with "ashr/lshr exact" of a constanst. 2014-07-22 19:19:36 +00:00
Instrumentation [ASan] Fix comments about __sanitizer_cov function 2014-07-22 17:46:09 +00:00
ObjCARC Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
Scalar Do not add unroll disable metadata after unrolling pass for loops with #pragma clang loop unroll(full). 2014-07-23 20:05:44 +00:00
Utils SimplifyCFG: fix a bug in switch to table conversion 2014-07-23 23:13:23 +00:00
Vectorize Rename metadata llvm.loop.vectorize.unroll to llvm.loop.vectorize.interleave. 2014-07-21 23:11:03 +00:00
CMakeLists.txt Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
LLVMBuild.txt Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
Makefile Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00