Duncan Sands 91fa1da2f7 Replacing zero-sized alloca's with a null pointer is too aggressive, instead ... merge all zero-sized alloca's into one, fixing c43204g from the Ada ACATS conformance testsuite. What happened there was that a variable sized object was being allocated on the stack, "alloca i8, i32 %size". It was then being passed to another function, which tested that the address was not null (raising an exception if it was) then manipulated %size bytes in it (load and/or store). The optimizers cleverly managed to deduce that %size was zero (congratulations to them, as it isn't at all obvious), which made the alloca zero size, causing the optimizers to replace it with null, which then caused the check mentioned above to fail, and the exception to be raised, wrongly. Note that no loads and stores were actually being done to the alloca (the loop that does them is executed %size times, i.e. is not executed), only the not-null address check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159202 91177308-0d34-0410-b5e6-96231b3b80d8		2012-06-26 13:39:21 +00:00
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Hello
InstCombine	Replacing zero-sized alloca's with a null pointer is too aggressive, instead	2012-06-26 13:39:21 +00:00
Instrumentation	llvm/lib: [CMake] Add explicit dependency to intrinsics_gen.	2012-06-24 13:32:01 +00:00
IPO	If a constant or a function has linkonce_odr linkage and unnamed_addr, mark it	2012-06-25 14:30:31 +00:00
Scalar	revert my previous commit (r159173), since as Eli pointed out, it's perfectly ok to mark realloc as noalias	2012-06-25 23:26:10 +00:00
Utils	The name (and comment describing) of llvm::GetFirstDebuigLocInBasicBlock no longer represents what the function does. Therefore, the function is removed and its functionality is folded into the only place in the code-base where it was being used.	2012-06-25 10:13:14 +00:00
Vectorize	llvm/lib: [CMake] Add explicit dependency to intrinsics_gen.	2012-06-24 13:32:01 +00:00
CMakeLists.txt	Add a basic-block autovectorization pass.	2012-02-01 03:51:43 +00:00
LLVMBuild.txt	Add a basic-block autovectorization pass.	2012-02-01 03:51:43 +00:00
Makefile	Add a basic-block autovectorization pass.	2012-02-01 03:51:43 +00:00