llvm/test/Transforms/IndVarSimplify/shrunk-constant.ll
Dan Gohman 61ffa8e373 Instcombine's ShrinkDemandedConstant may strip bits out of constants,
obscuring what would otherwise be a low-bits mask.  Use ComputeMaskedBits
to compute what ShrinkDemandedConstant knew about to reconstruct a
low-bits mask value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73540 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16 19:52:01 +00:00

15 lines
285 B
LLVM

; RUN: llvm-as < %s | opt -iv-users -analyze | grep store
define fastcc void @foo() nounwind {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %t2, %loop ]
%t0 = add i32 %i, 9
%t1 = and i32 %t0, 9
store i32 %t1, i32* null
%t2 = add i32 %i, 8
br label %loop
}