llvm-6502/test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll

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; Don't reduce the byte access to P[i], at least not on targets that
; support an efficient 'mem[r1+r2]' addressing mode.
; RUN: opt < %s -loop-reduce -disable-output
declare i1 @pred(i32)
define void @test(i8* %PTR) {
; <label>:0
br label %Loop
Loop: ; preds = %Loop, %0
%INDVAR = phi i32 [ 0, %0 ], [ %INDVAR2, %Loop ] ; <i32> [#uses=2]
%STRRED = getelementptr i8* %PTR, i32 %INDVAR ; <i8*> [#uses=1]
store i8 0, i8* %STRRED
%INDVAR2 = add i32 %INDVAR, 1 ; <i32> [#uses=2]
;; cannot eliminate indvar
%cond = call i1 @pred( i32 %INDVAR2 ) ; <i1> [#uses=1]
br i1 %cond, label %Loop, label %Out
Out: ; preds = %Loop
ret void
}