| ; RUN: opt -S -correlated-propagation -debug-only=lazy-value-info <%s 2>&1 | FileCheck %s |
| ; REQUIRES: asserts |
| ; |
| ; Shortcut in Correlated Value Propagation ensures not to take Lazy Value Info |
| ; analysis for %a.i and %tmp because %a.i is defined by alloca and %tmp is |
| ; defined by alloca + bitcast. We know the ret value of alloca is nonnull. |
| ; |
| ; CHECK-NOT: LVI Getting edge value %a.i = alloca i64, align 8 at 'for.body' |
| ; CHECK-NOT: LVI Getting edge value %tmp = bitcast i64* %a.i to i8* from 'for.cond' to 'for.body' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @.str = private unnamed_addr constant [8 x i8] c"a = %l\0A\00", align 1 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) |
| |
| declare void @hoo(i64*) |
| |
| declare i32 @printf(i8* nocapture readonly, ...) |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) |
| |
| define void @goo(i32 %N, i64* %b) { |
| entry: |
| %a.i = alloca i64, align 8 |
| %tmp = bitcast i64* %a.i to i8* |
| %c = getelementptr inbounds i64, i64* %b, i64 0 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.body, %entry |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %cmp = icmp slt i32 %i.0, %N |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| call void @llvm.lifetime.start.p0i8(i64 8, i8* %tmp) |
| call void @hoo(i64* %a.i) |
| call void @hoo(i64* %c) |
| %tmp1 = load volatile i64, i64* %a.i, align 8 |
| %call.i = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i64 %tmp1) |
| call void @llvm.lifetime.end.p0i8(i64 8, i8* %tmp) |
| %inc = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| ret void |
| } |
