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llvm-project/llvm/test/CodeGen/MIR/X86/roundtrip.mir

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llc: Add ability to parse mir from stdin - Add -x <language> option to switch between IR and MIR inputs. - Change MIR parser to read from stdin when filename is '-'. - Add a simple mir roundtrip test. llvm-svn: 304825
2017-06-07 04:06:57 +08:00
# RUN: llc -o - %s -mtriple=x86_64-- -run-pass=none | llc -o - -x mir - -mtriple=x86_64-- -run-pass=none | FileCheck %s
---
# CHECK-LABEL: name: func0
# CHECK: registers:
# CHECK: - { id: 0, class: gr32, preferred-register: '' }
# CHECK: - { id: 1, class: gr32, preferred-register: '' }
# CHECK: body: |
# CHECK: bb.0:
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
# CHECK: %0:gr32 = MOV32r0 implicit-def $eflags
MIR: Print the register class or bank in vreg defs This updates the MIRPrinter to include the regclass when printing virtual register defs, which is already valid syntax for the parser. That is, given 64 bit %0 and %1 in a "gpr" regbank, %1(s64) = COPY %0(s64) would now be written as %1:gpr(s64) = COPY %0(s64) While this change alone introduces a bit of redundancy with the registers block, it allows us to update the tests to be more concise and understandable and brings us closer to being able to remove the registers block completely. Note: We generally only print the class in defs, but there is one exception. If there are uses without any defs whatsoever, we'll print the class on all uses. I'm not completely convinced this comes up in meaningful machine IR, but for now the MIRParser and MachineVerifier both accept that kind of stuff, so we don't want to have a situation where we can print something we can't parse. llvm-svn: 316479
2017-10-25 02:04:54 +08:00
# CHECK: dead %1:gr32 = COPY %0
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
# CHECK: MOV32mr undef $rcx, 1, $noreg, 0, $noreg, killed %0 :: (volatile store 4)
# CHECK: RETQ undef $eax
llc: Add ability to parse mir from stdin - Add -x <language> option to switch between IR and MIR inputs. - Change MIR parser to read from stdin when filename is '-'. - Add a simple mir roundtrip test. llvm-svn: 304825
2017-06-07 04:06:57 +08:00
name: func0
body: |
bb.0:
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
%0 : gr32 = MOV32r0 implicit-def $eflags
llc: Add ability to parse mir from stdin - Add -x <language> option to switch between IR and MIR inputs. - Change MIR parser to read from stdin when filename is '-'. - Add a simple mir roundtrip test. llvm-svn: 304825
2017-06-07 04:06:57 +08:00
dead %1 : gr32 = COPY %0
Followup on Proposal to move MIR physical register namespace to '$' sigil. Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
2018-02-01 06:04:26 +08:00
MOV32mr undef $rcx, 1, _, 0, _, killed %0 :: (volatile store 4)
RETQ undef $eax
llc: Add ability to parse mir from stdin - Add -x <language> option to switch between IR and MIR inputs. - Change MIR parser to read from stdin when filename is '-'. - Add a simple mir roundtrip test. llvm-svn: 304825
2017-06-07 04:06:57 +08:00
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