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37 lines
706 B
LLVM
37 lines
706 B
LLVM
; RUN: as < %s | opt -licm -stats 2>&1 | grep "memory locations promoted to register"
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%X = global int 7
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void %testfunc(int %i) {
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br label %Loop
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Loop:
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%j = phi uint [0, %0], [%Next, %Loop]
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%x = load int* %X ; Should promote this to a register inside of loop!
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%x2 = add int %x, 1
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store int %x2, int* %X
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%Next = add uint %j, 1
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%cond = seteq uint %Next, 0
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br bool %cond, label %Out, label %Loop
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Out:
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ret void
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}
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void %testhard(int %i) {
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br label %Loop
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Loop:
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%X1 = getelementptr int* %X, long 0
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%A = load int* %X1 ; Aliases X, needs to be rewritten
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%V = add int %A, 1
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%X2 = getelementptr int* %X, long 0
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store int %V, int* %X2
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br bool false, label %Loop, label %Exit
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Exit:
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ret void
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}
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