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Materialize GA addresses with movw + movt pairs for Darwin in PIC mode. e.g.

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movw    r0, :lower16:(L_foo$non_lazy_ptr-(LPC0_0+4))
        movt    r0, :upper16:(L_foo$non_lazy_ptr-(LPC0_0+4))
LPC0_0:
        add     r0, pc, r0

It's not yet enabled by default as some tests are failing. I suspect bugs in
down stream tools.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123619 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-01-17 08:03:18 +00:00
parent b1086a9c6d
commit 5de5d4b6d0
18 changed files with 248 additions and 85 deletions
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lib/Target/ARM/ARMFastISel.cpp
+1 -1
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@@ -517,7 +517,7 @@ unsigned ARMFastISel::ARMMaterializeGV(const GlobalValue *GV, EVT VT) {
// Grab index.
unsigned PCAdj = (RelocM != Reloc::PIC_) ? 0 : (Subtarget->isThumb() ? 4 : 8);
unsigned Id = AFI->createConstPoolEntryUId();
unsigned Id = AFI->createPICLabelUId();
ARMConstantPoolValue *CPV = new ARMConstantPoolValue(GV, Id,
ARMCP::CPValue, PCAdj);
unsigned Idx = MCP.getConstantPoolIndex(CPV, Align);