1;; RUN: opt -S -codegenprepare < %s | FileCheck %s 2 3;; Ensure that codegenprepare (via InstSimplify) doesn't eliminate the 4;; phi here (which would cause a module verification error). 5 6;; CHECK: phi 7 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,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@futex_lock_pi_atomic, %b.exit)) 16 to label %asm.fallthrough.i [label %b.exit] 17 18asm.fallthrough.i: 19 br label %b.exit 20 21b.exit: 22 %g.0 = phi i32 [ %0, %asm.fallthrough.i ], [ undef, %entry ] 23 tail call void @foo(i32 %g.0) 24 ret i32 undef 25} 26 27