[mips][microMIPS] Implement BEQZ16 and BNEZ16 instructions

Differential Revision: http://reviews.llvm.org/D5271

llvm-svn: 225627

6 files changed, 59 insertions, 0 deletions

diff --git a/llvm/test/MC/Disassembler/Mips/micromips.txt b/llvm/test/MC/Disassembler/Mips/micromips.txt
index 9acad9f8692..07c1df91441 100644
--- a/llvm/test/MC/Disassembler/Mips/micromips.txt
+++ b/llvm/test/MC/Disassembler/Mips/micromips.txt
@@ -468,3 +468,9 @@
 
 # CHECK: sw $4, 124($sp)
 0xc8 0x9f
+
+# CHECK: beqz16 $6, 20
+0x8f 0x0a
+
+# CHECK: bnez16 $6, 20
+0xaf 0x0a
diff --git a/llvm/test/MC/Disassembler/Mips/micromips_le.txt b/llvm/test/MC/Disassembler/Mips/micromips_le.txt
index 1015c24c159..9a8c4a94530 100644
--- a/llvm/test/MC/Disassembler/Mips/micromips_le.txt
+++ b/llvm/test/MC/Disassembler/Mips/micromips_le.txt
@@ -468,3 +468,9 @@
 
 # CHECK: sw $4, 124($sp)
 0x9f 0xc8
+
+# CHECK: beqz16 $6, 20
+0x0a 0x8f
+
+# CHECK: bnez16 $6, 20
+0x0a 0xaf
diff --git a/llvm/test/MC/Mips/micromips-16-bit-instructions.s b/llvm/test/MC/Mips/micromips-16-bit-instructions.s
index 7a9e84baa3d..8fd6d450ac9 100644
--- a/llvm/test/MC/Mips/micromips-16-bit-instructions.s
+++ b/llvm/test/MC/Mips/micromips-16-bit-instructions.s
@@ -49,6 +49,10 @@
 # CHECK-EL: nop                     # encoding: [0x00,0x0c]
 # CHECK-EL: jr16    $9              # encoding: [0x89,0x45]
 # CHECK-EL: nop                     # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-EL: beqz16 $6, 20           # encoding: [0x0a,0x8f]
+# CHECK-EL: nop                     # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-EL: bnez16 $6, 20           # encoding: [0x0a,0xaf]
+# CHECK-EL: nop                     # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-EL: break16 8               # encoding: [0x88,0x46]
 # CHECK-EL: sdbbp16 14              # encoding: [0xce,0x46]
 #------------------------------------------------------------------------------
@@ -94,6 +98,10 @@
 # CHECK-EB: nop                     # encoding: [0x0c,0x00]
 # CHECK-EB: jr16    $9              # encoding: [0x45,0x89]
 # CHECK-EB: nop                     # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-EB: beqz16 $6, 20           # encoding: [0x8f,0x0a]
+# CHECK-EB: nop                     # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-EB: bnez16 $6, 20           # encoding: [0xaf,0x0a]
+# CHECK-EB: nop                     # encoding: [0x00,0x00,0x00,0x00]
 # CHECK-EB: break16 8               # encoding: [0x46,0x88]
 # CHECK-EB: sdbbp16 14              # encoding: [0x46,0xce]
 
@@ -135,5 +143,7 @@
     jraddiusp 20
     jalrs16 $9
     jr16    $9
+    beqz16 $6, 20
+    bnez16 $6, 20
     break16 8
     sdbbp16 14
diff --git a/llvm/test/MC/Mips/micromips-bad-branches.s b/llvm/test/MC/Mips/micromips-bad-branches.s
index 573605e18d6..f64cd9f9e5b 100644
--- a/llvm/test/MC/Mips/micromips-bad-branches.s
+++ b/llvm/test/MC/Mips/micromips-bad-branches.s
@@ -126,6 +126,11 @@
 # CHECK: error: branch target out of range
 # CHECK:        bc1t $fcc0, 65536
 
+# CHECK: error: branch to misaligned address
+# CHECK:        beqz16 $6, 31
+# CHECK: error: branch target out of range
+# CHECK:        beqz16 $6, 130
+
         b -65535
         b -65536
         b -65537
@@ -223,3 +228,6 @@
         bc1t $fcc0, 65534
         bc1t $fcc0, 65535
         bc1t $fcc0, 65536
+
+        beqz16 $6, 31
+        beqz16 $6, 130
diff --git a/llvm/test/MC/Mips/micromips-branch7.s b/llvm/test/MC/Mips/micromips-branch7.s
new file mode 100644
index 00000000000..deb7307e938
--- /dev/null
+++ b/llvm/test/MC/Mips/micromips-branch7.s
@@ -0,0 +1,27 @@
+# RUN: llvm-mc %s -triple=mipsel-unknown-linux -show-encoding \
+# RUN: -mattr=micromips | FileCheck %s -check-prefix=CHECK-FIXUP
+# RUN: llvm-mc %s -filetype=obj -triple=mipsel-unknown-linux \
+# RUN: -mattr=micromips | llvm-readobj -r \
+# RUN: | FileCheck %s -check-prefix=CHECK-ELF
+#------------------------------------------------------------------------------
+# Check that the assembler can handle the documented syntax
+# for relocations.
+#------------------------------------------------------------------------------
+# CHECK-FIXUP: beqz16 $6, bar  # encoding: [0b0AAAAAAA,0x8f]
+# CHECK-FIXUP:                 #   fixup A - offset: 0,
+# CHECK-FIXUP:                     value: bar, kind: fixup_MICROMIPS_PC7_S1
+# CHECK-FIXUP: nop             # encoding: [0x00,0x00,0x00,0x00]
+# CHECK-FIXUP: bnez16 $6, bar  # encoding: [0b0AAAAAAA,0xaf]
+# CHECK-FIXUP:                 #   fixup A - offset: 0,
+# CHECK-FIXUP:                     value: bar, kind: fixup_MICROMIPS_PC7_S1
+# CHECK-FIXUP: nop             # encoding: [0x00,0x00,0x00,0x00]
+#------------------------------------------------------------------------------
+# Check that the appropriate relocations were created.
+#------------------------------------------------------------------------------
+# CHECK-ELF: Relocations [
+# CHECK-ELF:     0x{{[0-9,A-F]+}} R_MICROMIPS_PC7_S1
+# CHECK-ELF:     0x{{[0-9,A-F]+}} R_MICROMIPS_PC7_S1
+# CHECK-ELF: ]
+
+  beqz16 $6, bar
+  bnez16 $6, bar
diff --git a/llvm/test/MC/Mips/micromips-invalid.s b/llvm/test/MC/Mips/micromips-invalid.s
index b94313a7fc1..1dbfb113a2c 100644
--- a/llvm/test/MC/Mips/micromips-invalid.s
+++ b/llvm/test/MC/Mips/micromips-invalid.s
@@ -64,3 +64,5 @@
   sw16  $7, 4($10)  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
   cache 256, 8($5)  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: immediate operand value out of range
   pref 256, 8($5)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: immediate operand value out of range
+  beqz16 $9, 20 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
+  bnez16 $9, 20 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction