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PR4286: Make RewriteLoadUserOfWholeAlloca and

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RewriteStoreUserOfWholeAlloca deal with tail padding because 
isSafeUseOfBitCastedAllocation expects them to.  Otherwise, we crash 
trying to erase the bitcast.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72688 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2009-06-01 09:14:32 +00:00
parent 3728a02534
commit 41b33f437f
2 changed files with 30 additions and 8 deletions
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17
test/Transforms/ScalarRepl/2009-06-01-BitcastIntPadding.ll Normal file
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@@ -0,0 +1,17 @@
; RUN: llvm-as < %s | opt -scalarrepl
; PR4286
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "x86_64-undermydesk-freebsd8.0"
%struct.singlebool = type <{ i8 }>
define zeroext i8 @doit() nounwind {
entry:
%a = alloca %struct.singlebool, align 1 ; <%struct.singlebool*> [#uses=2]
%storetmp.i = bitcast %struct.singlebool* %a to i1* ; <i1*> [#uses=1]
store i1 true, i1* %storetmp.i
%tmp = getelementptr %struct.singlebool* %a, i64 0, i32 0 ; <i8*> [#uses=1]
%tmp1 = load i8* %tmp ; <i8> [#uses=1]
ret i8 %tmp1
}