[llvm] r343203 - [Sparc] Add unimp alias

[Daniel Cederman via llvm-commits]

Author: dcederman
Date: Thu Sep 27 05:34:53 2018
New Revision: 343203

URL: http://llvm.org/viewvc/llvm-project?rev=343203&view=rev
Log:
[Sparc] Add unimp alias

Summary: Use 0 as the default immediate for the UNIMP instruction.
This matches the behavior in gas.

Reviewers: jyknight, venkatra

Subscribers: fedor.sergeev, jrtc27, llvm-commits

Differential Revision: https://reviews.llvm.org/D51526

Added:
    llvm/trunk/test/MC/Sparc/sparc-misc-instructions.s
Modified:
    llvm/trunk/lib/Target/Sparc/SparcInstrAliases.td

Modified: llvm/trunk/lib/Target/Sparc/SparcInstrAliases.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcInstrAliases.td?rev=343203&r1=343202&r2=343203&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcInstrAliases.td (original)
+++ llvm/trunk/lib/Target/Sparc/SparcInstrAliases.td Thu Sep 27 05:34:53 2018
@@ -476,6 +476,9 @@ def : InstAlias<"pwr $simm13, %psr", (PW
 // flush -> flush %g0
 def : InstAlias<"flush", (FLUSH), 0>;
 
+// unimp -> unimp 0
+def : InstAlias<"unimp", (UNIMP 0), 0>;
+
 def : MnemonicAlias<"iflush", "flush">;
 
 def : MnemonicAlias<"stub", "stb">;

Added: llvm/trunk/test/MC/Sparc/sparc-misc-instructions.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Sparc/sparc-misc-instructions.s?rev=343203&view=auto
==============================================================================
--- llvm/trunk/test/MC/Sparc/sparc-misc-instructions.s (added)
+++ llvm/trunk/test/MC/Sparc/sparc-misc-instructions.s Thu Sep 27 05:34:53 2018
@@ -0,0 +1,8 @@
+! RUN: llvm-mc %s -arch=sparc   -show-encoding | FileCheck %s
+! RUN: llvm-mc %s -arch=sparcv9 -show-encoding | FileCheck %s
+
+        ! CHECK: unimp 0   ! encoding: [0x00,0x00,0x00,0x00]
+        unimp
+
+        ! CHECK: unimp 0   ! encoding: [0x00,0x00,0x00,0x00]
+        unimp 0