Meador Inge a241b58f8d instcombine: Don't replace all uses for instructions with no uses ... My commit to migrate the printf simplifiers from the simplify-libcalls in r168604 introduced a regression reported by Duncan [1]. The problem is that in some cases the library call simplifier can return a new value that has no uses and the new value's type is different than the old value's type (which is fine because there are no uses). The specific case that triggered the bug looked something like: declare void @printf(i8*, ...) ... call void (i8*, ...)* @printf(i8* %fmt) Which we want to optimized into: call i32 @putchar(i32 104) However, the code was attempting to replace all uses of the printf with the putchar and the types differ, hence a crash. This is fixed by *just* deleting the original instruction when there are no uses. The old simplify-libcalls pass is already doing something similar. [1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2012-November/056338.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168716 91177308-0d34-0410-b5e6-96231b3b80d8		2012-11-27 18:52:49 +00:00
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Analysis	SCEV: Even if the latch terminator is foldable we can't deduce the result of an unrelated condition with it.	2012-11-27 18:16:32 +00:00
Archive	Mark checkSignature const, and in turn stop casting away const from	2012-09-05 22:09:23 +00:00
AsmParser	Remove the dependent libraries feature.	2012-11-27 09:55:56 +00:00
Bitcode	Remove the dependent libraries feature.	2012-11-27 09:55:56 +00:00
CodeGen	Remove duplicated #includes.	2012-11-27 18:27:14 +00:00
DebugInfo	The section is .debug_line.	2012-11-27 01:40:36 +00:00
ExecutionEngine	IntelJITEventsWrapper.h: Prune two members, FinalizeThreadFunc and FinalizeProcessFunc, for now. [-Wunused-private-field]	2012-11-22 13:18:37 +00:00
Linker	Remove the dependent libraries feature.	2012-11-27 09:55:56 +00:00
MC	This patch implements medium code model support for 64-bit PowerPC.	2012-11-27 17:35:46 +00:00
Object	s/assert/llvm_unreachable/	2012-11-14 17:58:11 +00:00
Support	Allow using MemoryBuffers with yaml::Stream directly.	2012-11-19 23:21:47 +00:00
TableGen	Remove exception handling usage from tblgen.	2012-10-25 20:33:17 +00:00
Target	X86: do not fold load instructions such as [V]MOVS[S|D] to other instructions	2012-11-27 18:09:26 +00:00
Transforms	instcombine: Don't replace all uses for instructions with no uses	2012-11-27 18:52:49 +00:00
VMCore	Remove the dependent libraries feature.	2012-11-27 09:55:56 +00:00
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LLVMBuild.txt
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