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31 lines
1.2 KiB
LLVM
31 lines
1.2 KiB
LLVM
; RUN: opt < %s -analyze -scalar-evolution > %t
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; RUN: grep {sext i57 \{0,+,199\}<%bb> to i64} %t | count 1
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; RUN: grep {sext i59 \{0,+,199\}<%bb> to i64} %t | count 1
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin9.6"
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define i64 @foo(i64* nocapture %x, i64 %n) nounwind {
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entry:
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%t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1]
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br i1 %t0, label %bb, label %return
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bb: ; preds = %bb, %entry
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%i.01 = phi i64 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2]
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%t1 = shl i64 %i.01, 7 ; <i32> [#uses=1]
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%t2 = ashr i64 %t1, 7 ; <i32> [#uses=1]
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%s1 = shl i64 %i.01, 5 ; <i32> [#uses=1]
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%s2 = ashr i64 %s1, 5 ; <i32> [#uses=1]
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%t3 = getelementptr i64* %x, i64 %i.01 ; <i64*> [#uses=1]
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store i64 0, i64* %t3, align 1
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%indvar.next = add i64 %i.01, 199 ; <i32> [#uses=2]
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%exitcond = icmp eq i64 %indvar.next, %n ; <i1> [#uses=1]
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br i1 %exitcond, label %return, label %bb
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return: ; preds = %bb, %entry
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%p = phi i64 [ 0, %entry ], [ %t2, %bb ]
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%q = phi i64 [ 0, %entry ], [ %s2, %bb ]
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%v = xor i64 %p, %q
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ret i64 %v
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}
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