llvm/test/Transforms/LoopStrengthReduce/dont_reduce_bytes.ll
Dan Gohman b1e1e82c54 Change these tests to feed the assembly files to opt directly, instead
of using llvm-as, now that opt supports this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 16:50:01 +00:00

23 lines
651 B
LLVM

; 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
}