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