Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/test/Transforms/LICM/unrolled-deeply-nested.ll

@@ -1,76 +0,0 @@
-; Test that LICM correctly detects conflicting accesses to memory in deeply
-; nested subloops. This works in the legacy PM due to a special retained map of
-; alias information for inner loops, and in the new PM it is recomputed for each
-; loop.
-;
-; RUN: opt -S -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop(licm)' < %s | FileCheck %s
-; RUN: opt -S -basicaa -licm < %s | FileCheck %s
-
-define i32 @test(i32* %a, i64 %n.0, i64 %n.0.0, i64 %n.0.0.0, i64 %n.0.0.0.0) nounwind uwtable readonly {
-; CHECK-LABEL: define i32 @test
-entry:
-  %b = alloca i32
-  %c = alloca i32
-  %a.i8 = bitcast i32* %a to i8*
-  %b.i8 = bitcast i32* %b to i8*
-  %c.i8 = bitcast i32* %c to i8*
-  br label %l.0.header
-; CHECK: %b = alloca i32
-; CHECK: %c = alloca i32
-; CHECK: %[[AI8:.*]] = bitcast i32* %a to i8*
-; CHECK: %[[BI8:.*]] = bitcast i32* %b to i8*
-; CHECK: %[[CI8:.*]] = bitcast i32* %c to i8*
-; CHECK-NOT: load
-; CHECK: br
-
-l.0.header:
-  %iv.0 = phi i64 [ %iv.0.next, %l.0.latch ], [ 0, %entry ]
-  %iv.0.next = add i64 %iv.0, 1
-  %exitcond.0 = icmp eq i64 %iv.0.next, %n.0
-  %a.val = load i32, i32* %a
-  store i32 %a.val, i32* %b
-  %c.val = trunc i64 %iv.0 to i32
-  store i32 %c.val, i32* %c
-  br label %l.0.0.header
-; CHECK: %[[AV:.*]] = load i32, i32* %a
-; CHECK: store i32 %[[AV]], i32* %b
-; CHECK: %[[CT:.*]] = trunc i64 {{.*}} to i32
-; CHECK: store i32 %[[CT]], i32* %c
-; CHECK: br
-
-l.0.0.header:
-  %iv.0.0 = phi i64 [ %iv.0.0.next, %l.0.0.latch ], [ 0, %l.0.header ]
-  %iv.0.0.next = add i64 %iv.0.0, 1
-  %exitcond.0.0 = icmp eq i64 %iv.0.0.next, %n.0.0
-  br label %l.0.0.0.header
-; CHECK: br
-
-l.0.0.0.header:
-  %iv.0.0.0 = phi i64 [ %iv.0.0.0.next, %l.0.0.0.header ], [ 0, %l.0.0.header ]
-  %iv.0.0.0.next = add i64 %iv.0.0.0, 1
-  %exitcond.0.0.0 = icmp eq i64 %iv.0.0.0.next, %n.0.0.0
-  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a.i8, i8* %c.i8, i64 4, i32 1, i1 false)
-  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b.i8, i8* %c.i8, i64 4, i32 1, i1 false)
-  br i1 %exitcond.0.0.0, label %l.0.0.0.header, label %l.0.0.latch
-; CHECK: call void @llvm.memcpy.{{.*}}(i8* %[[AI8]], i8* %[[CI8]], i64 4
-; CHECK: call void @llvm.memcpy.{{.*}}(i8* %[[BI8]], i8* %[[CI8]], i64 4
-; CHECK: br
-
-l.0.0.latch:
-  br i1 %exitcond.0.0, label %l.0.0.header, label %l.0.latch
-; CHECK: br
-
-l.0.latch:
-  %b.val = load i32, i32* %b
-  br i1 %exitcond.0, label %exit, label %l.0.header
-; CHECK: %[[BV:.*]] = load i32, i32* %b
-; CHECK: br
-
-exit:
-  %result.lcssa = phi i32 [ %b.val, %l.0.latch ]
-  ret i32 %b.val
-; CHECK: %[[LCSSA:.*]] = phi i32 [ %[[BV]], %{{.*}} ]
-; CHECK: ret i32 %[[LCSSA]]
-}
-
-declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)