--- /dev/null
+; RUN: opt -licm -basicaa < %s -S | FileCheck %s
+; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
+
+define void @test1(i64 %n) {
+; CHECK-LABEL: @test1
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ fence release
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+
+define void @test2(i64 %n) {
+; CHECK-LABEL: @test2
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ fence acquire
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+
+define void @test3(i64 %n) {
+; CHECK-LABEL: @test3
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ fence acq_rel
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+
+define void @test4(i64 %n) {
+; CHECK-LABEL: @test4
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ fence seq_cst
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+
+define void @testneg1(i64 %n, i64* %p) {
+; CHECK-LABEL: @testneg1
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ store i64 %iv, i64* %p
+ fence release
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+
+define void @testneg2(i64* %p) {
+; CHECK-LABEL: @testneg2
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ fence acquire
+ %n = load i64, i64* %p
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+
+define void @testfp1(i64 %n, i64* %p) {
+; CHECK-LABEL: @testfp1
+; CHECK-LABEL: loop:
+; CHECK: fence
+entry:
+ br label %loop
+loop:
+ %iv = phi i64 [0, %entry], [%iv.next, %loop]
+ fence release
+ fence release
+ %iv.next = add i64 %iv, 1
+ %test = icmp slt i64 %iv, %n
+ br i1 %test, label %loop, label %exit
+exit:
+ ret void
+}
+