maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Have TargetLowering::getPICJumpTableRelocBase return a node that points to the 

GOT if jump table uses 64-bit gp-relative relocation.

llvm-svn: 154341
This commit is contained in:
Akira Hatanaka 2012-04-09 20:32:12 +00:00
parent e0e38f61a5
commit 8483a6c47d
2 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
View File

@ -1079,8 +1079,12 @@ unsigned TargetLowering::getJumpTableEncoding() const {
SDValue TargetLowering::getPICJumpTableRelocBase(SDValue Table,
SelectionDAG &DAG) const {
// If our PIC model is GP relative, use the global offset table as the base.
if (getJumpTableEncoding() == MachineJumpTableInfo::EK_GPRel32BlockAddress)
unsigned JTEncoding = getJumpTableEncoding();
if ((JTEncoding == MachineJumpTableInfo::EK_GPRel64BlockAddress) ||
(JTEncoding == MachineJumpTableInfo::EK_GPRel32BlockAddress))
return DAG.getGLOBAL_OFFSET_TABLE(getPointerTy());
return Table;
}

4
llvm/test/CodeGen/Mips/2010-07-20-Switch.ll
View File

@ -13,9 +13,13 @@ entry:
; PIC-O32: lw $[[R0:[0-9]+]], %got($JTI0_0)
; PIC-O32: addiu ${{[0-9]+}}, $[[R0]], %lo($JTI0_0)
; PIC-O32: sll ${{[0-9]+}}, ${{[0-9]+}}, 2
; PIC-O32: addu $[[R1:[0-9]+]], ${{[0-9]+}}, $gp
; PIC-O32: jr $[[R1]]
; PIC-N64: ld $[[R0:[0-9]+]], %got_page($JTI0_0)
; PIC-N64: daddiu ${{[0-9]+}}, $[[R0]], %got_ofst($JTI0_0)
; PIC-N64: dsll ${{[0-9]+}}, ${{[0-9]+}}, 3
; PIC-N64: daddu $[[R1:[0-9]+]], ${{[0-9]+}}, $gp
; PIC-N64: jr $[[R1]]
switch i32 %0, label %bb4 [
i32 0, label %bb5
i32 1, label %bb1