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The assembler can alias one instruction into another based on the operands. For example the jump instruction "J" takes and immediate operand, but if the operand is a register the assembler will change it into a jump register "JR" instruction. These changes are in the instruction td file. Test cases included Contributer: Vladimir Medic llvm-svn: 163368
73 lines
2.9 KiB
ArmAsm
73 lines
2.9 KiB
ArmAsm
# RUN: llvm-mc %s -triple=mipsel-unknown-linux -show-encoding -mcpu=mips32r2 | FileCheck %s
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# Check that the assembler can handle the documented syntax
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# for jumps and branches.
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# CHECK: .section __TEXT,__text,regular,pure_instructions
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#------------------------------------------------------------------------------
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# Branch instructions
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#------------------------------------------------------------------------------
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# CHECK: b 1332 # encoding: [0x34,0x05,0x00,0x10]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bc1f 1332 # encoding: [0x34,0x05,0x00,0x45]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bc1t 1332 # encoding: [0x34,0x05,0x01,0x45]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: beq $9, $6, 1332 # encoding: [0x34,0x05,0x26,0x11]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bgez $6, 1332 # encoding: [0x34,0x05,0xc1,0x04]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bgezal $6, 1332 # encoding: [0x34,0x05,0xd1,0x04]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bgtz $6, 1332 # encoding: [0x34,0x05,0xc0,0x1c]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: blez $6, 1332 # encoding: [0x34,0x05,0xc0,0x18]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bne $9, $6, 1332 # encoding: [0x34,0x05,0x26,0x15]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: bal 1332 # encoding: [0x34,0x05,0x00,0x04]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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b 1332
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nop
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bc1f 1332
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nop
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bc1t 1332
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nop
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beq $9,$6,1332
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nop
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bgez $6,1332
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nop
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bgezal $6,1332
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nop
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bgtz $6,1332
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nop
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blez $6,1332
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nop
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bne $9,$6,1332
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nop
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bal 1332
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nop
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end_of_code:
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#------------------------------------------------------------------------------
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# Jump instructions
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#------------------------------------------------------------------------------
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# CHECK: j 1328 # encoding: [0x30,0x05,0x00,0x08]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: jal 1328 # encoding: [0x30,0x05,0x00,0x0c]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: jalr $6 # encoding: [0x09,0xf8,0xc0,0x00]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: jr $7 # encoding: [0x08,0x00,0xe0,0x00]
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# CHECK: nop # encoding: [0x00,0x00,0x00,0x00]
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# CHECK: jr $7 # encoding: [0x08,0x00,0xe0,0x00]
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j 1328
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nop
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jal 1328
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nop
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jalr $6
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nop
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jr $7
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nop
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j $7
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