1; RUN: opt < %s -S -passes=licm | FileCheck %s 2 3; Check that the LICM pass does not operate on a loop which has the 4; llvm.licm.disable metadata. 5; CHECK-LABEL: @licm_disable 6; CHECK: entry: 7; CHECK-NOT: load 8; CHECK: do.body: 9; CHECK: load i64, ptr @in 10 11target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 12target triple = "x86_64-pc-windows-msvc" 13 14@in = internal unnamed_addr global ptr null, align 8 15@out = internal unnamed_addr global ptr null, align 8 16 17define void @licm_disable(i32 %N) { 18entry: 19 br label %do.body 20 21do.body: ; preds = %entry 22 %i.0 = phi i32 [ 0, %entry ], [ %inc, %do.body ] 23 %v1 = load i64, ptr @in, align 8 24 store i64 %v1, ptr @out, align 8 25 %inc = add nsw i32 %i.0, 1 26 %cmp = icmp slt i32 %inc, %N 27 br i1 %cmp, label %do.body, label %do.end, !llvm.loop !1 28 29do.end: ; preds = %do.body 30 ret void 31} 32!1 = !{!1, !2} 33!2 = !{!"llvm.licm.disable"} 34