[mips] Add instruction alias (dsll and dsrl).

Summary:
The pattern dsll/dsrl $rd, $rt, $rs is found in handwritten assembly which
is just a shorthand version of dsllv/dsrlv $rd, $rt, $rs.

Reviewers: dsanders

Reviewed By: dsanders

Differential Revision: http://reviews.llvm.org/D3486

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207664 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/Mips64InstrInfo.td b/lib/Target/Mips/Mips64InstrInfo.td
index 7f895e23f993f7b806c29ae0ba8ad91af4ba3760..1303028c689b0772f374c9df9e9e0d153e3aed08 100644 (file)
--- a/lib/Target/Mips/Mips64InstrInfo.td
+++ b/lib/Target/Mips/Mips64InstrInfo.td
@@ -440,6 +440,8 @@ def : InstAlias<"add $rs, $imm",
 def : InstAlias<"addu $rs, $imm",
                 (ADDiu GPR32Opnd:$rs, GPR32Opnd:$rs, simm16:$imm),
                 0>;
+def : InstAlias<"dsll $rd, $rt, $rs",
+                (DSLLV GPR64Opnd:$rd, GPR64Opnd:$rt, GPR32Opnd:$rs), 0>;
 def : InstAlias<"dsubu $rt, $rs, $imm",
                 (DADDiu GPR64Opnd:$rt, GPR64Opnd:$rs,
                 InvertedImOperand64: $imm),0>;
@@ -449,6 +451,8 @@ def : InstAlias<"dsub $rs, $imm",
 def : InstAlias<"dsubu $rs, $imm",
                 (DADDiu GPR64Opnd:$rs, GPR64Opnd:$rs, InvertedImOperand64:$imm),
                 0>;
+def : InstAlias<"dsrl $rd, $rt, $rs",
+                (DSRLV GPR64Opnd:$rd, GPR64Opnd:$rt, GPR32Opnd:$rs), 0>;
 
 /// Move between CPU and coprocessor registers
 let DecoderNamespace = "Mips64", Predicates = [HasMips64] in {

diff --git a/test/MC/Mips/mips3/valid.s b/test/MC/Mips/mips3/valid.s
index 03dd05b4cf770598e5a4415af17ec74f3b1ec733..ea4234e9d6f2a028d754225e8bf30bf9833ada35 100644 (file)
--- a/test/MC/Mips/mips3/valid.s
+++ b/test/MC/Mips/mips3/valid.s
@@ -47,6 +47,7 @@
        dmultu  $a1,$a2
        dsll   $zero,18             # CHECK: dsll $zero, $zero, 18       # encoding: [0x00,0x00,0x04,0xb8]
        dsll   $zero,$s4,18         # CHECK: dsll $zero, $20, 18         # encoding: [0x00,0x14,0x04,0xb8]
+       dsll   $zero,$s4,$t4        # CHECK: dsllv $zero, $20, $12       # encoding: [0x01,0x94,0x00,0x14]
        dsll32 $zero,18             # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsll32 $zero,$zero,18       # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsllv  $zero,$t4            # CHECK: dsllv $zero, $zero, $12     # encoding: [0x01,0x80,0x00,0x14]
@@ -59,6 +60,7 @@
        dsrav  $gp,$s2,$s3          # CHECK: dsrav $gp, $18, $19         # encoding: [0x02,0x72,0xe0,0x17]
        dsrl   $s3,23               # CHECK: dsrl $19, $19, 23           # encoding: [0x00,0x13,0x9d,0xfa]
        dsrl   $s3,$6,23            # CHECK: dsrl $19, $6, 23            # encoding: [0x00,0x06,0x9d,0xfa]
+       dsrl   $s3,$6,$s4           # CHECK: dsrlv $19, $6, $20          # encoding: [0x02,0x86,0x98,0x16]
        dsrl32 $s3,23               # CHECK: dsrl32 $19, $19, 23         # encoding: [0x00,0x13,0x9d,0xfe]
        dsrl32 $s3,$6,23            # CHECK: dsrl32 $19, $6, 23          # encoding: [0x00,0x06,0x9d,0xfe]
        dsrlv  $s3,$s4              # CHECK: dsrlv $19, $19, $20         # encoding: [0x02,0x93,0x98,0x16]

diff --git a/test/MC/Mips/mips4/valid.s b/test/MC/Mips/mips4/valid.s
index 727367d35afe0434621786e09b6a710a6062d030..27c487f03c5d66e01ddc577b17a875f9d444e64a 100644 (file)
--- a/test/MC/Mips/mips4/valid.s
+++ b/test/MC/Mips/mips4/valid.s
@@ -46,6 +46,7 @@
        dmultu  $a1,$a2
        dsll  $zero,18             # CHECK: dsll $zero, $zero, 18       # encoding: [0x00,0x00,0x04,0xb8]
        dsll  $zero,$s4,18         # CHECK: dsll $zero, $20, 18         # encoding: [0x00,0x14,0x04,0xb8]
+       dsll  $zero,$s4,$t4        # CHECK: dsllv $zero, $20, $12       # encoding: [0x01,0x94,0x00,0x14]
        dsll32 $zero,18            # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsll32 $zero,$zero,18      # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsllv $zero,$t4            # CHECK: dsllv $zero, $zero, $12     # encoding: [0x01,0x80,0x00,0x14]
@@ -58,6 +59,7 @@
        dsrav $gp,$s2,$s3          # CHECK: dsrav $gp, $18, $19         # encoding: [0x02,0x72,0xe0,0x17]
        dsrl  $s3,23               # CHECK: dsrl $19, $19, 23           # encoding: [0x00,0x13,0x9d,0xfa]
        dsrl  $s3,$6,23            # CHECK: dsrl $19, $6, 23            # encoding: [0x00,0x06,0x9d,0xfa]
+       dsrl  $s3,$6,$s4           # CHECK: dsrlv $19, $6, $20          # encoding: [0x02,0x86,0x98,0x16]
        dsrl32  $s3,23             # CHECK: dsrl32 $19, $19, 23         # encoding: [0x00,0x13,0x9d,0xfe]
        dsrl32  $s3,$6,23          # CHECK: dsrl32 $19, $6, 23          # encoding: [0x00,0x06,0x9d,0xfe]
        dsrlv $s3,$s4              # CHECK: dsrlv $19, $19, $20         # encoding: [0x02,0x93,0x98,0x16]

diff --git a/test/MC/Mips/mips5/valid.s b/test/MC/Mips/mips5/valid.s
index d32272d9544c30edef4ee8485c632d86bcadbdef..1127ee539445ea28862cf1c1d06c262a24d5533c 100644 (file)
--- a/test/MC/Mips/mips5/valid.s
+++ b/test/MC/Mips/mips5/valid.s
@@ -47,6 +47,7 @@
        dmultu  $a1,$a2
        dsll  $zero,18             # CHECK: dsll $zero, $zero, 18       # encoding: [0x00,0x00,0x04,0xb8]
        dsll  $zero,$s4,18         # CHECK: dsll $zero, $20, 18         # encoding: [0x00,0x14,0x04,0xb8]
+       dsll  $zero,$s4,$t4        # CHECK: dsllv $zero, $20, $12       # encoding: [0x01,0x94,0x00,0x14]
        dsll32 $zero,18            # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsll32 $zero,$zero,18      # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsllv $zero,$t4            # CHECK: dsllv $zero, $zero, $12     # encoding: [0x01,0x80,0x00,0x14]
@@ -59,6 +60,7 @@
        dsrav $gp,$s2,$s3          # CHECK: dsrav $gp, $18, $19         # encoding: [0x02,0x72,0xe0,0x17]
        dsrl  $s3,23               # CHECK: dsrl $19, $19, 23           # encoding: [0x00,0x13,0x9d,0xfa]
        dsrl  $s3,$6,23            # CHECK: dsrl $19, $6, 23            # encoding: [0x00,0x06,0x9d,0xfa]
+       dsrl  $s3,$6,$s4           # CHECK: dsrlv $19, $6, $20          # encoding: [0x02,0x86,0x98,0x16]
        dsrl32  $s3,23             # CHECK: dsrl32 $19, $19, 23         # encoding: [0x00,0x13,0x9d,0xfe]
        dsrl32  $s3,$6,23          # CHECK: dsrl32 $19, $6, 23          # encoding: [0x00,0x06,0x9d,0xfe]
        dsrlv $s3,$s4              # CHECK: dsrlv $19, $19, $20         # encoding: [0x02,0x93,0x98,0x16]

diff --git a/test/MC/Mips/mips64/valid.s b/test/MC/Mips/mips64/valid.s
index ae7454f1ca4cf3f7b2524f48aff0fdf75defa5af..fd607dd02f7c672c6a9b8bab769fe653633ceded 100644 (file)
--- a/test/MC/Mips/mips64/valid.s
+++ b/test/MC/Mips/mips64/valid.s
@@ -51,6 +51,7 @@
        dmultu  $a1,$a2
        dsll  $zero,18             # CHECK: dsll $zero, $zero, 18       # encoding: [0x00,0x00,0x04,0xb8]
        dsll  $zero,$s4,18         # CHECK: dsll $zero, $20, 18         # encoding: [0x00,0x14,0x04,0xb8]
+       dsll  $zero,$s4,$t4        # CHECK: dsllv $zero, $20, $12       # encoding: [0x01,0x94,0x00,0x14]
        dsll32 $zero,18            # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsll32 $zero,$zero,18      # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsllv $zero,$t4            # CHECK: dsllv $zero, $zero, $12     # encoding: [0x01,0x80,0x00,0x14]
@@ -63,6 +64,7 @@
        dsrav $gp,$s2,$s3          # CHECK: dsrav $gp, $18, $19         # encoding: [0x02,0x72,0xe0,0x17]
        dsrl  $s3,23               # CHECK: dsrl $19, $19, 23           # encoding: [0x00,0x13,0x9d,0xfa]
        dsrl  $s3,$6,23            # CHECK: dsrl $19, $6, 23            # encoding: [0x00,0x06,0x9d,0xfa]
+       dsrl  $s3,$6,$s4           # CHECK: dsrlv $19, $6, $20          # encoding: [0x02,0x86,0x98,0x16]
        dsrl32  $s3,23             # CHECK: dsrl32 $19, $19, 23         # encoding: [0x00,0x13,0x9d,0xfe]
        dsrl32  $s3,$6,23          # CHECK: dsrl32 $19, $6, 23          # encoding: [0x00,0x06,0x9d,0xfe]
        dsrlv $s3,$s4              # CHECK: dsrlv $19, $19, $20         # encoding: [0x02,0x93,0x98,0x16]

diff --git a/test/MC/Mips/mips64r2/valid.s b/test/MC/Mips/mips64r2/valid.s
index 4be54580efbdecae65203ef42002ffdc342d70d7..357c4e5b5e4ac71cec6be09674ceb19eac00b1e8 100644 (file)
--- a/test/MC/Mips/mips64r2/valid.s
+++ b/test/MC/Mips/mips64r2/valid.s
@@ -60,6 +60,7 @@
        dshd    $v0,$sp
        dsll  $zero,18             # CHECK: dsll $zero, $zero, 18       # encoding: [0x00,0x00,0x04,0xb8]
        dsll  $zero,$s4,18         # CHECK: dsll $zero, $20, 18         # encoding: [0x00,0x14,0x04,0xb8]
+       dsll  $zero,$s4,$t4        # CHECK: dsllv $zero, $20, $12       # encoding: [0x01,0x94,0x00,0x14]
        dsll32 $zero,18            # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsll32 $zero,$zero,18      # CHECK: dsll32 $zero, $zero, 18     # encoding: [0x00,0x00,0x04,0xbc]
        dsllv $zero,$t4            # CHECK: dsllv $zero, $zero, $12     # encoding: [0x01,0x80,0x00,0x14]
@@ -72,6 +73,7 @@
        dsrav $gp,$s2,$s3          # CHECK: dsrav $gp, $18, $19         # encoding: [0x02,0x72,0xe0,0x17]
        dsrl  $s3,23               # CHECK: dsrl $19, $19, 23           # encoding: [0x00,0x13,0x9d,0xfa]
        dsrl  $s3,$6,23            # CHECK: dsrl $19, $6, 23            # encoding: [0x00,0x06,0x9d,0xfa]
+       dsrl  $s3,$6,$s4           # CHECK: dsrlv $19, $6, $20          # encoding: [0x02,0x86,0x98,0x16]
        dsrl32  $s3,23             # CHECK: dsrl32 $19, $19, 23         # encoding: [0x00,0x13,0x9d,0xfe]
        dsrl32  $s3,$6,23          # CHECK: dsrl32 $19, $6, 23          # encoding: [0x00,0x06,0x9d,0xfe]
        dsrlv $s3,$s4              # CHECK: dsrlv $19, $19, $20         # encoding: [0x02,0x93,0x98,0x16]