[mips] Fix li/la differences between IAS and GAS.

Summary:
- Signed 16-bit should have priority over unsigned.
- For la, unsigned 16-bit must use ori+addu rather than directly use ori.
- Correct tests on 32-bit immediates with 64-bit predicates by
  sign-extending the immediate beforehand. For example, isInt<16>(0xffff8000)
  should be true and use addiu.

Also split li/la testing into separate files due to their size.

Reviewers: vkalintiris

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10967

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242139 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 67 insertions, 0 deletions

diff --git a/test/MC/Mips/macro-li.s b/test/MC/Mips/macro-li.s
new file mode 100644
index 000000000000..88e013a854e2
--- /dev/null
+++ b/test/MC/Mips/macro-li.s
@@ -0,0 +1,67 @@
+# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r2 | \
+# RUN:   FileCheck %s
+# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r6 | \
+# RUN:   FileCheck %s
+# RUN: llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r2 | \
+# RUN:   FileCheck %s
+# RUN: llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r6 | \
+# RUN:   FileCheck %s
+
+li $5, 0x00000001 # CHECK: addiu $5, $zero, 1      # encoding: [0x24,0x05,0x00,0x01]
+li $5, 0x00000002 # CHECK: addiu $5, $zero, 2      # encoding: [0x24,0x05,0x00,0x02]
+li $5, 0x00004000 # CHECK: addiu $5, $zero, 16384  # encoding: [0x24,0x05,0x40,0x00]
+li $5, 0x00008000 # CHECK: ori   $5, $zero, 32768  # encoding: [0x34,0x05,0x80,0x00]
+li $5, 0xffffffff # CHECK: addiu $5, $zero, -1     # encoding: [0x24,0x05,0xff,0xff]
+li $5, 0xfffffffe # CHECK: addiu $5, $zero, -2     # encoding: [0x24,0x05,0xff,0xfe]
+li $5, 0xffffc000 # CHECK: addiu $5, $zero, -16384 # encoding: [0x24,0x05,0xc0,0x00]
+li $5, 0xffff8000 # CHECK: addiu $5, $zero, -32768 # encoding: [0x24,0x05,0x80,0x00]
+
+li $5, 0x00010000 # CHECK: lui $5, 1      # encoding: [0x3c,0x05,0x00,0x01]
+li $5, 0x00020000 # CHECK: lui $5, 2      # encoding: [0x3c,0x05,0x00,0x02]
+li $5, 0x40000000 # CHECK: lui $5, 16384  # encoding: [0x3c,0x05,0x40,0x00]
+li $5, 0x80000000 # CHECK: lui $5, 32768  # encoding: [0x3c,0x05,0x80,0x00]
+li $5, 0xffff0000 # CHECK: lui $5, 65535  # encoding: [0x3c,0x05,0xff,0xff]
+li $5, 0xfffe0000 # CHECK: lui $5, 65534  # encoding: [0x3c,0x05,0xff,0xfe]
+li $5, 0xc0000000 # CHECK: lui $5, 49152  # encoding: [0x3c,0x05,0xc0,0x00]
+li $5, 0x80000000 # CHECK: lui $5, 32768  # encoding: [0x3c,0x05,0x80,0x00]
+
+li $5, 0x00010001 # CHECK: lui $5, 1        # encoding: [0x3c,0x05,0x00,0x01]
+                  # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+li $5, 0x00020001 # CHECK: lui $5, 2        # encoding: [0x3c,0x05,0x00,0x02]
+                  # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+li $5, 0x40000001 # CHECK: lui $5, 16384    # encoding: [0x3c,0x05,0x40,0x00]
+                  # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+li $5, 0x80000001 # CHECK: lui $5, 32768    # encoding: [0x3c,0x05,0x80,0x00]
+                  # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+li $5, 0x00010002 # CHECK: lui $5, 1        # encoding: [0x3c,0x05,0x00,0x01]
+                  # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+li $5, 0x00020002 # CHECK: lui $5, 2        # encoding: [0x3c,0x05,0x00,0x02]
+                  # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+li $5, 0x40000002 # CHECK: lui $5, 16384    # encoding: [0x3c,0x05,0x40,0x00]
+                  # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+li $5, 0x80000002 # CHECK: lui $5, 32768    # encoding: [0x3c,0x05,0x80,0x00]
+                  # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+li $5, 0x00014000 # CHECK: lui $5, 1        # encoding: [0x3c,0x05,0x00,0x01]
+                  # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+li $5, 0x00024000 # CHECK: lui $5, 2            # encoding: [0x3c,0x05,0x00,0x02]
+                  # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+li $5, 0x40004000 # CHECK: lui $5, 16384        # encoding: [0x3c,0x05,0x40,0x00]
+                  # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+li $5, 0x80004000 # CHECK: lui $5, 32768        # encoding: [0x3c,0x05,0x80,0x00]
+                  # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+li $5, 0x00018000 # CHECK: lui $5, 1            # encoding: [0x3c,0x05,0x00,0x01]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+li $5, 0x00028000 # CHECK: lui $5, 2            # encoding: [0x3c,0x05,0x00,0x02]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+li $5, 0x40008000 # CHECK: lui $5, 16384        # encoding: [0x3c,0x05,0x40,0x00]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+li $5, 0x80008000 # CHECK: lui $5, 32768        # encoding: [0x3c,0x05,0x80,0x00]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+li $5, 0xffff4000 # CHECK: lui $5, 65535        # encoding: [0x3c,0x05,0xff,0xff]
+                  # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+li $5, 0xfffe8000 # CHECK: lui $5, 65534        # encoding: [0x3c,0x05,0xff,0xfe]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+li $5, 0xc0008000 # CHECK: lui $5, 49152        # encoding: [0x3c,0x05,0xc0,0x00]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+li $5, 0x80008000 # CHECK: lui $5, 32768        # encoding: [0x3c,0x05,0x80,0x00]
+                  # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]