forked from OSchip/llvm-project
48 lines
1.6 KiB
LLVM
48 lines
1.6 KiB
LLVM
; RUN: opt < %s -S -basic-aa -licm | FileCheck %s
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; RUN: opt -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
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; This fixes PR22460
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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-pc-windows-msvc"
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@in = internal unnamed_addr global i32* null, align 8
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@out = internal unnamed_addr global i32* null, align 8
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; CHECK-LABEL: @bar
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; CHECK: entry:
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; CHECK: load i64, i64* bitcast (i32** @in to i64*)
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; CHECK: do.body:
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; CHECK-NOT: load
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define i64 @bar(i32 %N) {
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entry:
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br label %do.body
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do.body: ; preds = %l2, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %l2 ]
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%total = phi i64 [ 0, %entry ], [ %next, %l2 ]
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%c = icmp eq i32 %N, 6
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br i1 %c, label %l1, label %do.body.l2_crit_edge
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do.body.l2_crit_edge: ; preds = %do.body
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%inval.pre = load i32*, i32** @in, align 8
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br label %l2
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l1: ; preds = %do.body
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%v1 = load i64, i64* bitcast (i32** @in to i64*), align 8
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store i64 %v1, i64* bitcast (i32** @out to i64*), align 8
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%0 = inttoptr i64 %v1 to i32*
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br label %l2
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l2: ; preds = %do.body.l2_crit_edge, %l1
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%inval = phi i32* [ %inval.pre, %do.body.l2_crit_edge ], [ %0, %l1 ]
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%int = ptrtoint i32* %inval to i64
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%next = add i64 %total, %int
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%inc = add nsw i32 %i.0, 1
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%cmp = icmp slt i32 %inc, %N
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br i1 %cmp, label %do.body, label %do.end
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do.end: ; preds = %l2
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ret i64 %total
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}
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