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llvm-mirror/test/Transforms/DeadStoreElimination/2011-03-25-DSEMiscompile.ll
Bill Wendling 59a1021dc6 * The DSE code that tested for overlapping needed to take into account the fact
that one of the numbers is signed while the other is unsigned. This could lead
  to a wrong result when the signed was promoted to an unsigned int.

* Add the data layout line to the testcase so that it will test the appropriate
  thing.

Patch by David Terei!

llvm-svn: 128577
2011-03-30 21:37:19 +00:00

24 lines
962 B
LLVM

; RUN: opt < %s -basicaa -dse -S | FileCheck %s
; PR9561
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
target triple = "i386-apple-darwin9.8"
@A = external global [0 x i32]
declare cc10 void @Func2(i32*, i32*, i32*, i32)
define cc10 void @Func1(i32* noalias %Arg1, i32* noalias %Arg2, i32* %Arg3, i32 %Arg4) {
entry:
store i32 add (i32 ptrtoint ([0 x i32]* @A to i32), i32 1), i32* %Arg2
; CHECK: store i32 add (i32 ptrtoint ([0 x i32]* @A to i32), i32 1), i32* %Arg2
%ln2gz = getelementptr i32* %Arg1, i32 14
%ln2gA = bitcast i32* %ln2gz to double*
%ln2gB = load double* %ln2gA
%ln2gD = getelementptr i32* %Arg2, i32 -3
%ln2gE = bitcast i32* %ln2gD to double*
store double %ln2gB, double* %ln2gE
; CHECK: store double %ln2gB, double* %ln2gE
tail call cc10 void @Func2(i32* %Arg1, i32* %Arg2, i32* %Arg3, i32 %Arg4) nounwind
ret void
}