forked from OSchip/llvm-project
62 lines
2.3 KiB
LLVM
62 lines
2.3 KiB
LLVM
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; RUN: opt < %s -S -passes="default<O2>" -unroll-runtime=true -enable-npm-unroll-and-jam -unroll-threshold-default=0 -unroll-threshold-aggressive=300 | FileCheck %s -check-prefix=O2
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; RUN: opt < %s -S -passes="default<O3>" -unroll-runtime=true -enable-npm-unroll-and-jam -unroll-threshold-default=0 -unroll-threshold-aggressive=300 | FileCheck %s -check-prefix=O3
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; RUN: opt < %s -S -passes="default<Os>" -unroll-runtime=true -enable-npm-unroll-and-jam -unroll-threshold-default=0 -unroll-threshold-aggressive=300 | FileCheck %s -check-prefix=Os
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; RUN: opt < %s -S -passes="default<Oz>" -unroll-runtime=true -enable-npm-unroll-and-jam -unroll-threshold-default=0 -unroll-threshold-aggressive=300 | FileCheck %s -check-prefix=Oz
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; Check that Os and Oz are optimized like O2, not like O3. To easily highlight
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; the behavior, we artificially disable unrolling for anything but O3 by setting
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; the default threshold to 0.
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; O3: for.inner.1
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; O2-NOT: for.inner.1
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; Os-NOT: for.inner.1
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; Oz-NOT: for.inner.1
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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define void @test1(i32 %I, i32 %J, i32* noalias nocapture %A, i32* noalias nocapture readonly %B) #0 {
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entry:
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%cmp = icmp ne i32 %J, 0
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%cmpJ = icmp ne i32 %I, 0
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%or.cond = and i1 %cmp, %cmpJ
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br i1 %or.cond, label %for.outer.preheader, label %for.end
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for.outer.preheader:
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br label %for.outer
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for.outer:
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%i = phi i32 [ %add8, %for.latch ], [ 0, %for.outer.preheader ]
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br label %for.inner
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for.inner:
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%j = phi i32 [ 0, %for.outer ], [ %inc, %for.inner ]
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%sum = phi i32 [ 0, %for.outer ], [ %add, %for.inner ]
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%arrayidx = getelementptr inbounds i32, i32* %B, i32 %j
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%0 = load i32, i32* %arrayidx, align 4, !tbaa !5
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%add = add i32 %0, %sum
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%inc = add nuw i32 %j, 1
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%exitcond = icmp eq i32 %inc, %J
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br i1 %exitcond, label %for.latch, label %for.inner
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for.latch:
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%add.lcssa = phi i32 [ %add, %for.inner ]
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%arrayidx6 = getelementptr inbounds i32, i32* %A, i32 %i
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store i32 %add.lcssa, i32* %arrayidx6, align 4, !tbaa !5
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%add8 = add nuw i32 %i, 1
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%exitcond25 = icmp eq i32 %add8, %I
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br i1 %exitcond25, label %for.end.loopexit, label %for.outer
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for.end.loopexit:
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br label %for.end
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for.end:
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ret void
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}
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!5 = !{!6, !6, i64 0}
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!6 = !{!"int", !7, i64 0}
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!7 = !{!"omnipotent char", !8, i64 0}
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!8 = !{!"Simple C/C++ TBAA"}
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