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[PowerPC][AIX]Add lowering of MCSymbol MachineOperand.

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Adds machine operand lowering for MCSymbolSDNodes to the PowerPC
backend. This is needed to produce call instructions in assembly for AIX
because the callee operand is a MCSymbolSDNode. The test is XFAIL'ed for
asserts due to a (valid) assertion in PEI that the AIX ABI isn't supported yet.

Differential Revision: https://reviews.llvm.org/D63738

llvm-svn: 367133
This commit is contained in:
Sean Fertile 2019-07-26 17:25:27 +00:00
parent e7d5551501
commit 2fb8946c5f
3 changed files with 19 additions and 0 deletions
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3
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
View File

@ -1843,6 +1843,9 @@ MCSection *TargetLoweringObjectFileXCOFF::SelectSectionForGlobal(
Kind, /* BeginSymbolName */ nullptr);
}
if (Kind.isText())
return TextSection;
report_fatal_error("XCOFF other section types not yet implemented.");
}

3
lib/Target/PowerPC/PPCMCInstLower.cpp
View File

@ -193,6 +193,9 @@ bool llvm::LowerPPCMachineOperandToMCOperand(const MachineOperand &MO,
OutMO = GetSymbolRef(MO, AP.GetBlockAddressSymbol(MO.getBlockAddress()), AP,
isDarwin);
return true;
case MachineOperand::MO_MCSymbol:
OutMO = GetSymbolRef(MO, MO.getMCSymbol(), AP, isDarwin);
return true;
case MachineOperand::MO_RegisterMask:
return false;
}

13
test/CodeGen/PowerPC/test_call_aix.ll
View File

@ -1,9 +1,14 @@
; XFAIL: asserts
; RUN: llc -mtriple powerpc-ibm-aix-xcoff -stop-after=machine-cp < %s | \
; RUN: FileCheck --check-prefix=32BIT %s
; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -stop-after=machine-cp < %s | \
; RUN: FileCheck --check-prefix=64BIT %s
; RUN: llc -mtriple powerpc-ibm-aix-xcoff < %s | FileCheck %s
; RUN: llc -mtriple powerpc64-ibm-aix-xcoff < %s | FileCheck %s
declare void @foo(...)
define void @test_call() {
@ -16,6 +21,10 @@ entry:
; 64BIT: BL8_NOP <mcsymbol .foo>, csr_aix64, implicit-def dead $lr8, implicit $rm, implicit $x2, implicit-def $r1
; 64BIT: ADJCALLSTACKUP 112, 0, implicit-def dead $r1, implicit $r1
; CHECK-LABEL: test_call
; CHECK: bl .foo
; CHECK-NEXT: nop
call void bitcast (void (...)* @foo to void ()*)()
ret void
}
@ -35,6 +44,10 @@ entry:
; 64BIT: BL8 <mcsymbol .foo_local>, csr_aix64, implicit-def dead $lr8, implicit $rm, implicit $x2, implicit-def $r1
; 64BIT: ADJCALLSTACKUP 112, 0, implicit-def dead $r1, implicit $r1
; CHECK-LABEL: test_local_call
; CHECK: bl .foo_local
; CHECK-NOT: nop
call void @foo_local()
ret void
}