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1;; RUN: opt -S -passes='require<profile-summary>,function(codegenprepare)' < %s | FileCheck %s2 3;; Ensure that codegenprepare (via InstSimplify) doesn't eliminate the4;; phi here (which would cause a module verification error).5 6;; CHECK: phi7 8target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"9target triple = "x86_64-unknown-linux-gnu"10 11declare void @foo(i32)12 13define dso_local i32 @futex_lock_pi_atomic() local_unnamed_addr {14entry:15 %0 = callbr i32 asm "", "=r,!i,~{dirflag},~{fpsr},~{flags}"()16 to label %asm.fallthrough.i [label %b.exit]17 18asm.fallthrough.i:19 br label %b.exit20 21b.exit:22 %g.0 = phi i32 [ %0, %asm.fallthrough.i ], [ undef, %entry ]23 tail call void @foo(i32 %g.0)24 ret i32 undef25}26 27