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