[lld] r331994 - [ELF][MIPS] Add test case to check N32 ABI PLT generation. NFC

[Simon Atanasyan via llvm-commits]

Author: atanasyan
Date: Thu May 10 08:56:22 2018
New Revision: 331994

URL: http://llvm.org/viewvc/llvm-project?rev=331994&view=rev
Log:
[ELF][MIPS] Add test case to check N32 ABI PLT generation. NFC

Added:
    lld/trunk/test/ELF/mips-plt-n32.s

Added: lld/trunk/test/ELF/mips-plt-n32.s
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/mips-plt-n32.s?rev=331994&view=auto
==============================================================================
--- lld/trunk/test/ELF/mips-plt-n32.s (added)
+++ lld/trunk/test/ELF/mips-plt-n32.s Thu May 10 08:56:22 2018
@@ -0,0 +1,43 @@
+# REQUIRES: mips
+
+# Check PLT entries generation in case of using N32 ABI.
+
+# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
+# RUN:         -target-abi n32 %s -o %t1.o
+# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
+# RUN:         -target-abi n32 %S/Inputs/mips-dynamic.s -o %t2.o
+# RUN: ld.lld %t2.o -shared -o %t.so
+# RUN: ld.lld %t1.o %t.so -o %t.exe
+# RUN: llvm-objdump -d %t.exe | FileCheck %s --check-prefixes=DEFAULT,CHECK
+# RUN: ld.lld %t2.o -shared -o %t.so -z hazardplt
+# RUN: ld.lld %t1.o %t.so -o %t.exe -z hazardplt
+# RUN: llvm-objdump -d %t.exe | FileCheck %s --check-prefixes=HAZARDPLT,CHECK
+
+# CHECK:      Disassembly of section .text:
+# CHECK-NEXT: __start:
+# CHECK-NEXT:   20000:       0c 00 80 0c     jal     131120
+#                                                    ^-- 0x20030 gotplt[foo0]
+# CHECK-NEXT:   20004:       00 00 00 00     nop
+#
+# CHECK-NEXT: Disassembly of section .plt:
+# CHECK-NEXT: .plt:
+# CHECK-NEXT:   20010:       3c 0e 00 03     lui     $14, 3
+# CHECK-NEXT:   20014:       8d d9 00 04     lw      $25, 4($14)
+# CHECK-NEXT:   20018:       25 ce 00 04     addiu   $14, $14, 4
+# CHECK-NEXT:   2001c:       03 0e c0 23     subu    $24, $24, $14
+# CHECK-NEXT:   20020:       03 e0 78 25     move    $15, $ra
+# CHECK-NEXT:   20024:       00 18 c0 82     srl     $24, $24, 2
+# DEFAULT:      20028:       03 20 f8 09     jalr    $25
+# HAZARDPLT:    20028:       03 20 fc 09     jalr.hb $25
+# CHECK-NEXT:   2002c:       27 18 ff fe     addiu   $24, $24, -2
+
+# CHECK-NEXT:   20030:       3c 0f 00 03     lui     $15, 3
+# CHECK-NEXT:   20034:       8d f9 00 0c     lw      $25, 12($15)
+# DEFAULT:      20038:       03 20 00 08     jr      $25
+# HAZARDPLT:    20038:       03 20 04 08     jr.hb   $25
+# CHECK-NEXT:   2003c:       25 f8 00 0c     addiu   $24, $15, 12
+
+  .text
+  .global __start
+__start:
+  jal foo0        # R_MIPS_26 against 'foo0' from DSO