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llvm-6502/test/MC/SystemZ/insn-cgrl-01.s

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[SystemZ] Add MC test cases This adds all MC tests for the SystemZ target. Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181206 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 16:20:58 +00:00
# RUN: llvm-mc -triple s390x-linux-gnu -show-encoding %s | FileCheck %s
[SystemZ] Rework handling of constant PC-relative operands The GNU assembler treats things like: brasl %r14, 100 in the same way as: brasl %r14, .+100 rather than as a branch to absolute address 100. We implemented this in LLVM by creating an immediate operand rather than the usual expr operand, and by handling immediate operands specially in the code emitter. This was undesirable for (at least) three reasons: - the specialness of immediate operands was exposed to the backend MC code, rather than being limited to the assembler parser. - in disassembly, an immediate operand really is an absolute address. (Note that this means reassembling printed disassembly can't recreate the original code.) - it would interfere with any assembly manipulation that we might try in future. E.g. operations like branch shortening can change the relative position of instructions, but any code that updates sym+offset addresses wouldn't update an immediate "100" operand in the same way as an explicit ".+100" operand. This patch changes the implementation so that the assembler creates a "." label for immediate PC-relative operands, so that the operand to the MCInst is always the absolute address. The patch also adds some error checking of the offset. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181773 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-14 09:47:26 +00:00
#CHECK: cgrl %r0, .[[LAB:L.*]]-4294967296 # encoding: [0xc6,0x08,A,A,A,A]
#CHECK: fixup A - offset: 2, value: (.[[LAB]]-4294967296)+2, kind: FK_390_PC32DBL
cgrl %r0, -0x100000000
#CHECK: cgrl %r0, .[[LAB:L.*]]-2 # encoding: [0xc6,0x08,A,A,A,A]
#CHECK: fixup A - offset: 2, value: (.[[LAB]]-2)+2, kind: FK_390_PC32DBL
cgrl %r0, -2
#CHECK: cgrl %r0, .[[LAB:L.*]] # encoding: [0xc6,0x08,A,A,A,A]
#CHECK: fixup A - offset: 2, value: .[[LAB]]+2, kind: FK_390_PC32DBL
cgrl %r0, 0
#CHECK: cgrl %r0, .[[LAB:L.*]]+4294967294 # encoding: [0xc6,0x08,A,A,A,A]
#CHECK: fixup A - offset: 2, value: (.[[LAB]]+4294967294)+2, kind: FK_390_PC32DBL
cgrl %r0, 0xfffffffe
[SystemZ] Add MC test cases This adds all MC tests for the SystemZ target. Patch by Richard Sandiford. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181206 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-06 16:20:58 +00:00
#CHECK: cgrl %r0, foo # encoding: [0xc6,0x08,A,A,A,A]
# fixup A - offset: 2, value: foo+2, kind: FK_390_PC32DBL
#CHECK: cgrl %r15, foo # encoding: [0xc6,0xf8,A,A,A,A]
# fixup A - offset: 2, value: foo+2, kind: FK_390_PC32DBL
cgrl %r0,foo
cgrl %r15,foo
#CHECK: cgrl %r3, bar+100 # encoding: [0xc6,0x38,A,A,A,A]
# fixup A - offset: 2, value: (bar+100)+2, kind: FK_390_PC32DBL
#CHECK: cgrl %r4, bar+100 # encoding: [0xc6,0x48,A,A,A,A]
# fixup A - offset: 2, value: (bar+100)+2, kind: FK_390_PC32DBL
cgrl %r3,bar+100
cgrl %r4,bar+100
#CHECK: cgrl %r7, frob@PLT # encoding: [0xc6,0x78,A,A,A,A]
# fixup A - offset: 2, value: frob@PLT+2, kind: FK_390_PC32DBL
#CHECK: cgrl %r8, frob@PLT # encoding: [0xc6,0x88,A,A,A,A]
# fixup A - offset: 2, value: frob@PLT+2, kind: FK_390_PC32DBL
cgrl %r7,frob@PLT
cgrl %r8,frob@PLT
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