1 files changed, 27 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LICM/int_sideeffect.ll b/llvm/test/Transforms/LICM/int_sideeffect.ll
new file mode 100644
index 00000000000..842efe56585
--- /dev/null
+++ b/llvm/test/Transforms/LICM/int_sideeffect.ll
@@ -0,0 +1,27 @@
+; RUN: opt -S < %s -licm | FileCheck %s
+
+declare void @llvm.sideeffect()
+
+; LICM across a @llvm.sideeffect.
+
+; CHECK-LABEL: licm
+; CHECK: load
+; CHECK: loop:
+; CHECK-NOT: load
+define float @licm(i64 %n, float* nocapture readonly %p) #0 {
+bb0:
+  br label %loop
+
+loop:
+  %i = phi i64 [ 0, %bb0 ], [ %t5, %loop ]
+  %sum = phi float [ 0.000000e+00, %bb0 ], [ %t4, %loop ]
+  call void @llvm.sideeffect()
+  %t3 = load float, float* %p
+  %t4 = fadd float %sum, %t3
+  %t5 = add i64 %i, 1
+  %t6 = icmp ult i64 %t5, %n
+  br i1 %t6, label %loop, label %bb2
+
+bb2:
+  ret float %t4
+}