llvm-6502/test/Transforms/LICM/scalar_promote.ll

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; RUN: llvm-as < %s | opt -licm -disable-output -stats |& \
; RUN: grep {memory locations promoted to register}
@X = global i32 7 ; <i32*> [#uses=4]
define void @testfunc(i32 %i) {
; <label>:0
br label %Loop
Loop: ; preds = %Loop, %0
%j = phi i32 [ 0, %0 ], [ %Next, %Loop ] ; <i32> [#uses=1]
%x = load i32* @X ; <i32> [#uses=1]
%x2 = add i32 %x, 1 ; <i32> [#uses=1]
store i32 %x2, i32* @X
%Next = add i32 %j, 1 ; <i32> [#uses=2]
%cond = icmp eq i32 %Next, 0 ; <i1> [#uses=1]
br i1 %cond, label %Out, label %Loop
Out: ; preds = %Loop
ret void
}
define void @testhard(i32 %i) {
br label %Loop
Loop: ; preds = %Loop, %0
%X1 = getelementptr i32* @X, i64 0 ; <i32*> [#uses=1]
%A = load i32* %X1 ; <i32> [#uses=1]
%V = add i32 %A, 1 ; <i32> [#uses=1]
%X2 = getelementptr i32* @X, i64 0 ; <i32*> [#uses=1]
store i32 %V, i32* %X2
br i1 false, label %Loop, label %Exit
Exit: ; preds = %Loop
ret void
}