Commit 811b9fd3 authored by Tanya Lattner's avatar Tanya Lattner
Browse files

Merge 64582 from mainline 

Fix PR3522. It's not safe to sink into landing pad BB's.

llvm-svn: 64790
parent 11405dfa

llvm/lib/CodeGen/MachineSink.cpp

+5 −0
Original line number Diff line number Diff line
@@ -209,6 +209,11 @@ bool MachineSinking::SinkInstruction(MachineInstr *MI, bool &SawStore) { 
  if (SuccToSinkTo == 0)

    return false;



  // It's not safe to sink instructions to EH landing pad. Control flow into

  // landing pad is implicitly defined.

  if (SuccToSinkTo->isLandingPad())

    return false;

  

  DEBUG(cerr << "Sink instr " << *MI);

  DEBUG(cerr << "to block " << *SuccToSinkTo);

llvm/test/CodeGen/X86/pr3522.ll

0 → 100644
+30 −0
Original line number Diff line number Diff line 
; RUN: llvm-as < %s | llc -march=x86 -stats |& not grep machine-sink

; PR3522



target triple = "i386-pc-linux-gnu"

@.str = external constant [13 x i8]		; <[13 x i8]*> [#uses=1]



define void @_ada_c34018a() {

entry:

	%0 = tail call i32 @report__ident_int(i32 90)		; <i32> [#uses=1]

	%1 = trunc i32 %0 to i8		; <i8> [#uses=1]

	invoke void @__gnat_rcheck_12(i8* getelementptr ([13 x i8]* @.str, i32 0, i32 0), i32 32) noreturn

			to label %invcont unwind label %lpad



invcont:		; preds = %entry

	unreachable



bb22:		; preds = %lpad

	ret void



return:		; preds = %lpad

	ret void



lpad:		; preds = %entry

	%2 = icmp eq i8 %1, 90		; <i1> [#uses=1]

	br i1 %2, label %return, label %bb22

}



declare void @__gnat_rcheck_12(i8*, i32) noreturn



declare i32 @report__ident_int(i32)