forked from OSchip/llvm-project
48 lines
1.6 KiB
LLVM
48 lines
1.6 KiB
LLVM
; RUN: opt -domtree -instcombine -loops -S < %s | FileCheck %s
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; Note: The -loops above can be anything that requires the domtree, and is
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; necessary to work around a pass-manager bug.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: nounwind uwtable
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define void @foo(i32* %a, i32* %b) #0 {
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entry:
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%ptrint = ptrtoint i32* %a to i64
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%maskedptr = and i64 %ptrint, 63
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%maskcond = icmp eq i64 %maskedptr, 0
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tail call void @llvm.assume(i1 %maskcond)
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%ptrint1 = ptrtoint i32* %b to i64
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%maskedptr2 = and i64 %ptrint1, 63
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%maskcond3 = icmp eq i64 %maskedptr2, 0
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tail call void @llvm.assume(i1 %maskcond3)
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br label %for.body
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; CHECK-LABEL: @foo
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; CHECK: load i32, i32* {{.*}} align 64
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; CHECK: store i32 {{.*}} align 64
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; CHECK: ret
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
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%0 = load i32, i32* %arrayidx, align 4
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%add = add nsw i32 %0, 1
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%arrayidx5 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
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store i32 %add, i32* %arrayidx5, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 16
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%1 = trunc i64 %indvars.iv.next to i32
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%cmp = icmp slt i32 %1, 1648
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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ret void
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}
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; Function Attrs: nounwind
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declare void @llvm.assume(i1) #1
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attributes #0 = { nounwind uwtable }
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attributes #1 = { nounwind }
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