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llvm-6502/test/CodeGen/Mips/llvm-ir/indirectbr.ll

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[mips] Add tests for the 'ret', 'call', and 'indirectbr' LLVM IR instruction. Summary: The tests in this directory are intended to test a single IR instruction with as few dependencies on other instructions as possible. The aim is to be very confident that each LLVM-IR instruction is implemented correctly and with the optimal sequence of instructions, as well as to make it easy to tell what is tested, and make it easier to bring up new ISA revisions in the future. This gives us a good foundation on which to test bigger things. These particular tests will allow testing that MIPS32r6/MIPS64r6 generate the correct return instruction for returns, calls, and indirect branches. This will be a bit tricky since the assembly text is identical but the instruction is actually different. On MIPS32r6/MIPS64r6 'jr $rs' has been removed in favour of the equivalent 'jalr $zero, $rs'. 'jr $rs' remains as an alias for 'jalr $zero, $rs'. Differential Revision: http://reviews.llvm.org/D4266 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-04 15:16:14 +00:00
; Test all important variants of the unconditional 'br' instruction.
[mips][mips64r6] Use JALR for indirect branches instead of JR (which is not available on MIPS32r6/MIPS64r6) Summary: This completes the change to use JALR instead of JR on MIPS32r6/MIPS64r6. Reviewers: jkolek, vmedic, zoran.jovanovic, dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4269 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212605 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-09 10:21:59 +00:00
; RUN: llc -march=mips -mcpu=mips32 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOT-R6
; RUN: llc -march=mips -mcpu=mips32r2 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOT-R6
; RUN: llc -march=mips -mcpu=mips32r6 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=R6
; RUN: llc -march=mips64 -mcpu=mips4 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOT-R6
; RUN: llc -march=mips64 -mcpu=mips64 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOT-R6
; RUN: llc -march=mips64 -mcpu=mips64r2 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=NOT-R6
; RUN: llc -march=mips64 -mcpu=mips64r6 -asm-show-inst < %s | FileCheck %s -check-prefix=ALL -check-prefix=R6
[mips] Add tests for the 'ret', 'call', and 'indirectbr' LLVM IR instruction. Summary: The tests in this directory are intended to test a single IR instruction with as few dependencies on other instructions as possible. The aim is to be very confident that each LLVM-IR instruction is implemented correctly and with the optimal sequence of instructions, as well as to make it easy to tell what is tested, and make it easier to bring up new ISA revisions in the future. This gives us a good foundation on which to test bigger things. These particular tests will allow testing that MIPS32r6/MIPS64r6 generate the correct return instruction for returns, calls, and indirect branches. This will be a bit tricky since the assembly text is identical but the instruction is actually different. On MIPS32r6/MIPS64r6 'jr $rs' has been removed in favour of the equivalent 'jalr $zero, $rs'. 'jr $rs' remains as an alias for 'jalr $zero, $rs'. Differential Revision: http://reviews.llvm.org/D4266 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-04 15:16:14 +00:00
define i32 @br(i8 *%addr) {
; ALL-LABEL: br:
[mips][mips64r6] Use JALR for indirect branches instead of JR (which is not available on MIPS32r6/MIPS64r6) Summary: This completes the change to use JALR instead of JR on MIPS32r6/MIPS64r6. Reviewers: jkolek, vmedic, zoran.jovanovic, dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4269 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212605 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-09 10:21:59 +00:00
; NOT-R6: jr $4 # <MCInst #{{[0-9]+}} JR
; R6: jr $4 # <MCInst #{{[0-9]+}} JALR
[mips] Add tests for the 'ret', 'call', and 'indirectbr' LLVM IR instruction. Summary: The tests in this directory are intended to test a single IR instruction with as few dependencies on other instructions as possible. The aim is to be very confident that each LLVM-IR instruction is implemented correctly and with the optimal sequence of instructions, as well as to make it easy to tell what is tested, and make it easier to bring up new ISA revisions in the future. This gives us a good foundation on which to test bigger things. These particular tests will allow testing that MIPS32r6/MIPS64r6 generate the correct return instruction for returns, calls, and indirect branches. This will be a bit tricky since the assembly text is identical but the instruction is actually different. On MIPS32r6/MIPS64r6 'jr $rs' has been removed in favour of the equivalent 'jalr $zero, $rs'. 'jr $rs' remains as an alias for 'jalr $zero, $rs'. Differential Revision: http://reviews.llvm.org/D4266 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-04 15:16:14 +00:00
; ALL: $BB0_1: # %L1
[mips][mips64r6] Use JALR for indirect branches instead of JR (which is not available on MIPS32r6/MIPS64r6) Summary: This completes the change to use JALR instead of JR on MIPS32r6/MIPS64r6. Reviewers: jkolek, vmedic, zoran.jovanovic, dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4269 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212605 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-09 10:21:59 +00:00
; NOT-R6: jr $ra # <MCInst #{{[0-9]+}} JR
; R6: jr $ra # <MCInst #{{[0-9]+}} JALR
[mips] Add tests for the 'ret', 'call', and 'indirectbr' LLVM IR instruction. Summary: The tests in this directory are intended to test a single IR instruction with as few dependencies on other instructions as possible. The aim is to be very confident that each LLVM-IR instruction is implemented correctly and with the optimal sequence of instructions, as well as to make it easy to tell what is tested, and make it easier to bring up new ISA revisions in the future. This gives us a good foundation on which to test bigger things. These particular tests will allow testing that MIPS32r6/MIPS64r6 generate the correct return instruction for returns, calls, and indirect branches. This will be a bit tricky since the assembly text is identical but the instruction is actually different. On MIPS32r6/MIPS64r6 'jr $rs' has been removed in favour of the equivalent 'jalr $zero, $rs'. 'jr $rs' remains as an alias for 'jalr $zero, $rs'. Differential Revision: http://reviews.llvm.org/D4266 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-04 15:16:14 +00:00
; ALL: addiu $2, $zero, 0
[mips][mips64r6] Use JALR for indirect branches instead of JR (which is not available on MIPS32r6/MIPS64r6) Summary: This completes the change to use JALR instead of JR on MIPS32r6/MIPS64r6. Reviewers: jkolek, vmedic, zoran.jovanovic, dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4269 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212605 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-09 10:21:59 +00:00
[mips] Add tests for the 'ret', 'call', and 'indirectbr' LLVM IR instruction. Summary: The tests in this directory are intended to test a single IR instruction with as few dependencies on other instructions as possible. The aim is to be very confident that each LLVM-IR instruction is implemented correctly and with the optimal sequence of instructions, as well as to make it easy to tell what is tested, and make it easier to bring up new ISA revisions in the future. This gives us a good foundation on which to test bigger things. These particular tests will allow testing that MIPS32r6/MIPS64r6 generate the correct return instruction for returns, calls, and indirect branches. This will be a bit tricky since the assembly text is identical but the instruction is actually different. On MIPS32r6/MIPS64r6 'jr $rs' has been removed in favour of the equivalent 'jalr $zero, $rs'. 'jr $rs' remains as an alias for 'jalr $zero, $rs'. Differential Revision: http://reviews.llvm.org/D4266 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-04 15:16:14 +00:00
; ALL: $BB0_2: # %L2
[mips][mips64r6] Use JALR for indirect branches instead of JR (which is not available on MIPS32r6/MIPS64r6) Summary: This completes the change to use JALR instead of JR on MIPS32r6/MIPS64r6. Reviewers: jkolek, vmedic, zoran.jovanovic, dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D4269 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212605 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-09 10:21:59 +00:00
; NOT-R6: jr $ra # <MCInst #{{[0-9]+}} JR
; R6: jr $ra # <MCInst #{{[0-9]+}} JALR
[mips] Add tests for the 'ret', 'call', and 'indirectbr' LLVM IR instruction. Summary: The tests in this directory are intended to test a single IR instruction with as few dependencies on other instructions as possible. The aim is to be very confident that each LLVM-IR instruction is implemented correctly and with the optimal sequence of instructions, as well as to make it easy to tell what is tested, and make it easier to bring up new ISA revisions in the future. This gives us a good foundation on which to test bigger things. These particular tests will allow testing that MIPS32r6/MIPS64r6 generate the correct return instruction for returns, calls, and indirect branches. This will be a bit tricky since the assembly text is identical but the instruction is actually different. On MIPS32r6/MIPS64r6 'jr $rs' has been removed in favour of the equivalent 'jalr $zero, $rs'. 'jr $rs' remains as an alias for 'jalr $zero, $rs'. Differential Revision: http://reviews.llvm.org/D4266 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212345 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-04 15:16:14 +00:00
; ALL: addiu $2, $zero, 1
entry:
indirectbr i8* %addr, [label %L1, label %L2]
L1:
ret i32 0
L2:
ret i32 1
}
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