From: Bill Wendling <isanbard@gmail.com>
Date: Mon, 9 Nov 2009 21:20:14 +0000 (+0000)
Subject: The jump table was being generated before the end label for exception handling
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b1ec31d71184e318cae8c147658162f7ed019ada;p=oota-llvm.git

The jump table was being generated before the end label for exception handling
was generated. This caused code like this:

## The asm code for the function
        .section        __TEXT,__const
        .align  2
lJTI11_0:
LJTI11_0:
        .long    LBB11_16
        .long    LBB11_4
        .long    LBB11_5
        .long    LBB11_6
        .long    LBB11_7
        .long    LBB11_8
        .long    LBB11_9
        .long    LBB11_10
        .long    LBB11_11
        .long    LBB11_12
        .long    LBB11_13
        .long    LBB11_14
Leh_func_end11:   ## <---now in the wrong section!

The `Leh_func_end11' would then end up in the wrong section, causing the
resulting EH frame information to be wrong:

__ZL11CheckRightsjPKcbRbRP6NSData.eh:
    .set    Lset500eh,Leh_frame_end11-Leh_frame_begin11
    .long   Lset500eh  ; Length of Frame Information Entry
Leh_frame_begin11:
    .long   Leh_frame_begin11-Leh_frame_common
    .long   Leh_func_begin11-.
    .set    Lset501eh,Leh_func_end11-Leh_func_begin11
    .long   Lset501eh                                   ; FDE address range
`Lset501eh' is now something huge instead of the real value.

The X86 back-end generates the jump table after the EH information is
emitted. Do the same here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86588 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index 2dac18faa96..01dc6329fd0 100644
--- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -672,14 +672,14 @@ bool PPCLinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
 
   O << "\t.size\t" << CurrentFnName << ",.-" << CurrentFnName << '\n';
 
-  // Print out jump tables referenced by the function.
-  EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
-
   OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
 
   // Emit post-function debug information.
   DW->EndFunction(&MF);
 
+  // Print out jump tables referenced by the function.
+  EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
+
   // We didn't modify anything.
   return false;
 }