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[AArch64] Teach AsmPrinter about GlobalAddress operands.

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Fixes PR22761, rdar://20024866.
Differential Revision: http://reviews.llvm.org/D8042


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231400 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ahmed Bougacha 2015-03-05 20:04:21 +00:00
parent 03001d828e
commit 77f46f4f9f
2 changed files with 32 additions and 0 deletions
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12
lib/Target/AArch64/AArch64AsmPrinter.cpp
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@ -36,6 +36,7 @@
#include "llvm/MC/MCInstBuilder.h"
#include "llvm/MC/MCLinkerOptimizationHint.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
@ -221,6 +222,17 @@ void AArch64AsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNum,
O << '#' << Imm;
break;
}
case MachineOperand::MO_GlobalAddress: {
const GlobalValue *GV = MO.getGlobal();
MCSymbol *Sym = getSymbol(GV);
// FIXME: Can we get anything other than a plain symbol here?
assert(!MO.getTargetFlags() && "Unknown operand target flag!");
O << *Sym;
printOffset(MO.getOffset(), O);
break;
}
}
}

20
test/CodeGen/AArch64/inline-asm-globaladdress.ll Normal file
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@ -0,0 +1,20 @@
; RUN: llc < %s -mtriple aarch64-gnu-linux | FileCheck %s
; RUN: llc < %s -mtriple arm64-apple-darwin | FileCheck %s
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
; CHECK-LABEL: test_inlineasm_globaladdress:
; CHECK: b {{_?}}test_symbol
define void @test_inlineasm_globaladdress() {
call void asm sideeffect "b $0", "i"(void ()* @test_symbol)
ret void
}
; CHECK-LABEL: test_inlineasm_globaladdress_offset:
; CHECK: b {{_?}}test_symbol+4
define void @test_inlineasm_globaladdress_offset() {
call void asm sideeffect "b $0", "i"(void ()* bitcast (i8* getelementptr (i8* bitcast (void ()* @test_symbol to i8*), i64 4) to void ()*))
ret void
}
declare void @test_symbol()