42 lines
1.7 KiB
LLVM
42 lines
1.7 KiB
LLVM
; RUN: opt %loadPolly %defaultOpts -polly-analyze-ir -analyze %s | FileCheck %s -check-prefix=WITHAF
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; RUN: opt %loadPolly %defaultOpts -polly-analyze-ir -analyze %s | FileCheck %s
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;void f(long a[], long N) {
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; long i;
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; for (i = 0; i < 128; ++i)
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; a[i] = a[i] - a[i + 2];
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;}
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @f(i64* nocapture %a, i64 %N) nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%i.03 = phi i64 [ 0, %entry ], [ %3, %bb ] ; <i64> [#uses=3]
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%scevgep = getelementptr i64* %a, i64 %i.03 ; <i64*> [#uses=2]
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%tmp = add i64 %i.03, 2 ; <i64> [#uses=1]
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%scevgep4 = getelementptr i64* %a, i64 %tmp ; <i64*> [#uses=1]
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%0 = load i64* %scevgep, align 8 ; <i64> [#uses=1]
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%1 = load i64* %scevgep4, align 8 ; <i64> [#uses=1]
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%2 = sub i64 %0, %1 ; <i64> [#uses=1]
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store i64 %2, i64* %scevgep, align 8
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%3 = add nsw i64 %i.03, 1 ; <i64> [#uses=2]
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%exitcond = icmp eq i64 %3, 128 ; <i1> [#uses=1]
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br i1 %exitcond, label %return, label %bb
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return: ; preds = %bb
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ret void
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}
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; CHECK: Scop: bb => return Parameters: ()
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; WITHAF: Scop: bb => return Parameters: (), Max Loop Depth: 1
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; WITHAF: Bounds of Loop: bb: { 127 }
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; WITHAF: BB: bb{
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; WITHAF: Reads %a[8 * {0,+,1}<nuw><nsw><%bb> + 0]
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; WITHAF: Reads %a[8 * {0,+,1}<nuw><nsw><%bb> + 16]
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; WITHAF: Writes %a[8 * {0,+,1}<nuw><nsw><%bb> + 0]
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; WITHAF: }
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