From 7e23fc05c14ec04d6644c1f2d8759d308d77404d Mon Sep 17 00:00:00 2001
From: Matthias Braun <matze@braunis.de>
Date: Tue, 6 Jun 2017 20:06:57 +0000
Subject: 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
---
 llvm/test/CodeGen/MIR/X86/roundtrip.mir | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 llvm/test/CodeGen/MIR/X86/roundtrip.mir

(limited to 'llvm/test/CodeGen')

diff --git a/llvm/test/CodeGen/MIR/X86/roundtrip.mir b/llvm/test/CodeGen/MIR/X86/roundtrip.mir
new file mode 100644
index 00000000000..c697f730604
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/X86/roundtrip.mir
@@ -0,0 +1,20 @@
+# 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:
+# CHECK:     %0 = MOV32r0 implicit-def %eflags
+# CHECK:     dead %1 = COPY %0
+# CHECK:     MOV32mr undef %rcx, 1, _, 0, _, killed %0 :: (volatile store 4)
+# CHECK:     RETQ undef %eax
+name: func0
+body: |
+  bb.0:
+    %0 : gr32 = MOV32r0 implicit-def %eflags
+    dead %1 : gr32 = COPY %0
+    MOV32mr undef %rcx, 1, _, 0, _, killed %0 :: (volatile store 4)
+    RETQ undef %eax
+...
-- 
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