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| ; RUN: opt < %s -S -basicaa -licm | FileCheck %s
; Check that the LICM pass does not operate on a loop which has the
; llvm.licm.disable metadata.
; CHECK-LABEL: @licm_disable
; CHECK: entry:
; CHECK-NOT: load
; CHECK: do.body:
; CHECK: load i64, i64* bitcast (i32** @in to i64*)
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
@in = internal unnamed_addr global i32* null, align 8
@out = internal unnamed_addr global i32* null, align 8
define void @licm_disable(i32 %N) {
entry:
br label %do.body
do.body: ; preds = %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %do.body ]
%v1 = load i64, i64* bitcast (i32** @in to i64*), align 8
store i64 %v1, i64* bitcast (i32** @out to i64*), align 8
%inc = add nsw i32 %i.0, 1
%cmp = icmp slt i32 %inc, %N
br i1 %cmp, label %do.body, label %do.end, !llvm.loop !1
do.end: ; preds = %do.body
ret void
}
!1 = !{!1, !2}
!2 = !{!"llvm.licm.disable"}
|