[mips] Add tests for bitwise binary and integer arithmetic operators.

[dsanders]

Thanks for doing this. It seems that we have a lot of optimization deficiencies on basic operations that we need to sort out. In particular, we emit a lot of unnecessary sign/zero extends. I pointed out a few but stopped after I realized how often it occurred.

LGTM with the nits below fixed. If you can also annotate the redundant instructions with FIXME's that would be appreciated but there's a lot so I'm not going to make that a requirement.

test/CodeGen/Mips/llvm-ir/ashr.ll

31 ↗

(On Diff #18609)

all-label should be ALL-LABEL. Likewise below

43 ↗

(On Diff #18609)

The andi's are redundant in this file. Please add a FIXME about this

120 ↗

(On Diff #18609)

This should be redundant too. Please add a FIXME

test/CodeGen/Mips/llvm-ir/lshr.ll

43–52 ↗

(On Diff #18609)

It would be good to eliminate the excess instructions by changing the signext's to zeroext.
We'll have other tests for sign/zero extension.

Likewise below

test/CodeGen/Mips/llvm-ir/or.ll

57 ↗

(On Diff #18609)

This is redundant.

test/CodeGen/Mips/llvm-ir/sdiv.ll

27–28 ↗

(On Diff #18609)

These should be redundant since div is signed.
Likewise below

test/CodeGen/Mips/llvm-ir/udiv.ll

20 ↗

(On Diff #18609)

It would be good to eliminate the sign extends by switching to zeroext.

llvm/trunk/test/CodeGen/Mips/llvm-ir/add.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP64
+
+define signext i1 @add_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: add_i1:
+
+  ; ALL:        addu    $[[T0:[0-9]+]], $4, $5
+  ; ALL:        sll     $[[T0]], $[[T0]], 31
+  ; ALL:        sra     $2, $[[T0]], 31
+
+  %r = add i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @add_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: add_i8:
+
+  ; NOT-R2-R6:  addu    $[[T0:[0-9]+]], $4, $5
+  ; NOT-R2-R6:  sll     $[[T0]], $[[T0]], 24
+  ; NOT-R2-R6:  sra     $2, $[[T0]], 24
+
+  ; R2-R6:         addu    $[[T0:[0-9]+]], $4, $5
+  ; R2-R6:         seb     $2, $[[T0:[0-9]+]]
+
+  %r = add i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @add_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: add_i16:
+
+  ; NOT-R2-R6:  addu    $[[T0:[0-9]+]], $4, $5
+  ; NOT-R2-R6:  sll     $[[T0]], $[[T0]], 16
+  ; NOT-R2-R6:  sra     $2, $[[T0]], 16
+
+  ; R2-R6:         addu    $[[T0:[0-9]+]], $4, $5
+  ; R2-R6:         seh     $2, $[[T0:[0-9]+]]
+
+  %r = add i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @add_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: add_i32:
+
+  ; ALL:        addu    $2, $4, $5
+
+  %r = add i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @add_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: add_i64:
+
+  ; GP32:       addu    $3, $5, $7
+  ; GP32:       sltu    $[[T0:[0-9]+]], $3, $7
+  ; GP32:       addu    $[[T1:[0-9]+]], $[[T0]], $6
+  ; GP32:       addu    $2, $4, $[[T1]]
+
+  ; GP64:       daddu   $2, $4, $5
+
+  %r = add i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/and.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+
+define signext i1 @and_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: and_i1:
+
+  ; ALL:          and     $2, $4, $5
+
+  %r = and i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @and_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: and_i8:
+
+  ; ALL:          and     $2, $4, $5
+
+  %r = and i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @and_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: and_i16:
+
+  ; ALL:          and     $2, $4, $5
+
+  %r = and i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @and_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: and_i32:
+
+  ; GP32:         and     $2, $4, $5
+
+  ; GP64:         and     $[[T0:[0-9]+]], $4, $5
+  ; GP64:         sll     $2, $[[T0]], 0
+
+  %r = and i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @and_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: and_i64:
+
+  ; GP32:         and     $2, $4, $6
+  ; GP32:         and     $3, $5, $7
+
+  ; GP64:         and     $2, $4, $5
+
+  %r = and i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/ashr.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=M2 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 -check-prefix=NOT-R2-R6 \
+; RUN:    -check-prefix=32R1-R2
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=32R1-R2 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=32R6 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=M3 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=64R6 -check-prefix=R2-R6
+
+define signext i1 @ashr_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: ashr_i1:
+
+  ; ALL:        move    $2, $4
+
+  %r = ashr i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @ashr_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: ashr_i8:
+
+  ; FIXME: The andi instruction is redundant.
+  ; ALL:        andi    $[[T0:[0-9]+]], $5, 255
+  ; ALL:        srav    $2, $4, $[[T0]]
+
+  %r = ashr i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @ashr_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: ashr_i16:
+
+  ; FIXME: The andi instruction is redundant.
+  ; ALL:        andi    $[[T0:[0-9]+]], $5, 65535
+  ; ALL:        srav    $2, $4, $[[T0]]
+
+  %r = ashr i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @ashr_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: ashr_i32:
+
+  ; ALL:        srav    $2, $4, $5
+
+  %r = ashr i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @ashr_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: ashr_i64:
+
+  ; M2:         srav      $[[T0:[0-9]+]], $4, $7
+  ; M2:         andi      $[[T1:[0-9]+]], $7, 32
+  ; M2:         bnez      $[[T1]], $[[BB0:BB[0-9_]+]]
+  ; M2:         move      $3, $[[T0]]
+  ; M2:         srlv      $[[T2:[0-9]+]], $5, $7
+  ; M2:         not       $[[T3:[0-9]+]], $7
+  ; M2:         sll       $[[T4:[0-9]+]], $4, 1
+  ; M2:         sllv      $[[T5:[0-9]+]], $[[T4]], $[[T3]]
+  ; M2:         or        $3, $[[T3]], $[[T2]]
+  ; M2:         $[[BB0]]:
+  ; M2:         beqz      $[[T1]], $[[BB1:BB[0-9_]+]]
+  ; M2:         nop
+  ; M2:         sra       $2, $4, 31
+  ; M2:         $[[BB1]]:
+  ; M2:         jr        $ra
+  ; M2:         nop
+
+  ; 32R1-R2:    srlv      $[[T0:[0-9]+]], $5, $7
+  ; 32R1-R2:    not       $[[T1:[0-9]+]], $7
+  ; 32R1-R2:    sll       $[[T2:[0-9]+]], $4, 1
+  ; 32R1-R2:    sllv      $[[T3:[0-9]+]], $[[T2]], $[[T1]]
+  ; 32R1-R2:    or        $3, $[[T3]], $[[T0]]
+  ; 32R1-R2:    srav      $[[T4:[0-9]+]], $4, $7
+  ; 32R1-R2:    andi      $[[T5:[0-9]+]], $7, 32
+  ; 32R1-R2:    movn      $3, $[[T4]], $[[T5]]
+  ; 32R1-R2:    sra       $4, $4, 31
+  ; 32R1-R2:    jr        $ra
+  ; 32R1-R2:    movn      $2, $4, $[[T5]]
+
+  ; 32R6:       srav      $[[T0:[0-9]+]], $4, $7
+  ; 32R6:       andi      $[[T1:[0-9]+]], $7, 32
+  ; 32R6:       seleqz    $[[T2:[0-9]+]], $[[T0]], $[[T1]]
+  ; 32R6:       sra       $[[T3:[0-9]+]], $4, 31
+  ; 32R6:       selnez    $[[T4:[0-9]+]], $[[T3]], $[[T1]]
+  ; 32R6:       or        $[[T5:[0-9]+]], $[[T4]], $[[T2]]
+  ; 32R6:       srlv      $[[T6:[0-9]+]], $5, $7
+  ; 32R6:       not       $[[T7:[0-9]+]], $7
+  ; 32R6:       sll       $[[T8:[0-9]+]], $4, 1
+  ; 32R6:       sllv      $[[T9:[0-9]+]], $[[T8]], $[[T7]]
+  ; 32R6:       or        $[[T10:[0-9]+]], $[[T9]], $[[T6]]
+  ; 32R6:       seleqz    $[[T11:[0-9]+]], $[[T10]], $[[T1]]
+  ; 32R6:       selnez    $[[T12:[0-9]+]], $[[T0]], $[[T1]]
+  ; 32R6:       jr        $ra
+  ; 32R6:       or        $3, $[[T0]], $[[T11]]
+
+  ; FIXME: The sll instruction below is redundant.
+  ; GP64:       sll       $[[T0:[0-9]+]], $5, 0
+  ; GP64:       dsrav     $2, $4, $[[T0]]
+
+  %r = ashr i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/lshr.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=M2 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 -check-prefix=NOT-R2-R6 \
+; RUN:    -check-prefix=32R1-R2
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=32R1-R2 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=32R6 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=M3 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=64R6 -check-prefix=R2-R6
+
+define signext i1 @lshr_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: lshr_i1:
+
+  ; ALL:        move    $2, $4
+
+  %r = lshr i1 %a, %b
+  ret i1 %r
+}
+
+define zeroext i8 @lshr_i8(i8 zeroext %a, i8 zeroext %b) {
+entry:
+; ALL-LABEL: lshr_i8:
+
+  ; ALL:        srlv    $[[T0:[0-9]+]], $4, $5
+  ; ALL:        andi    $2, $[[T0]], 255
+
+  %r = lshr i8 %a, %b
+  ret i8 %r
+}
+
+define zeroext i16 @lshr_i16(i16 zeroext %a, i16 zeroext %b) {
+entry:
+; ALL-LABEL: lshr_i16:
+
+  ; ALL:        srlv    $[[T0:[0-9]+]], $4, $5
+  ; ALL:        andi    $2, $[[T0]], 65535
+
+  %r = lshr i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @lshr_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: lshr_i32:
+
+  ; ALL:          srlv    $2, $4, $5
+
+  %r = lshr i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @lshr_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: lshr_i64:
+
+  ; M2:         srlv      $[[T0:[0-9]+]], $4, $7
+  ; M2:         andi      $[[T1:[0-9]+]], $7, 32
+  ; M2:         bnez      $[[T1]], $[[BB0:BB[0-9_]+]]
+  ; M2:         move      $3, $[[T0]]
+  ; M2:         srlv      $[[T2:[0-9]+]], $5, $7
+  ; M2:         not       $[[T3:[0-9]+]], $7
+  ; M2:         sll       $[[T4:[0-9]+]], $4, 1
+  ; M2:         sllv      $[[T5:[0-9]+]], $[[T4]], $[[T3]]
+  ; M2:         or        $3, $[[T3]], $[[T2]]
+  ; M2:         $[[BB0]]:
+  ; M2:         bnez      $[[T1]], $[[BB1:BB[0-9_]+]]
+  ; M2:         addiu     $2, $zero, 0
+  ; M2:         move      $2, $[[T0]]
+  ; M2:         $[[BB1]]:
+  ; M2:         jr        $ra
+  ; M2:         nop
+
+  ; 32R1-R2:    srlv      $[[T0:[0-9]+]], $5, $7
+  ; 32R1-R2:    not       $[[T1:[0-9]+]], $7
+  ; 32R1-R2:    sll       $[[T2:[0-9]+]], $4, 1
+  ; 32R1-R2:    sllv      $[[T3:[0-9]+]], $[[T2]], $[[T1]]
+  ; 32R1-R2:    or        $3, $[[T3]], $[[T0]]
+  ; 32R1-R2:    srlv      $[[T4:[0-9]+]], $4, $7
+  ; 32R1-R2:    andi      $[[T5:[0-9]+]], $7, 32
+  ; 32R1-R2:    movn      $3, $[[T4]], $[[T5]]
+  ; 32R1-R2:    jr        $ra
+  ; 32R1-R2:    movn      $2, $zero, $[[T5]]
+
+  ; 32R6:       srlv      $[[T0:[0-9]+]], $5, $7
+  ; 32R6:       not       $[[T1:[0-9]+]], $7
+  ; 32R6:       sll       $[[T2:[0-9]+]], $4, 1
+  ; 32R6:       sllv      $[[T3:[0-9]+]], $[[T2]], $[[T1]]
+  ; 32R6:       or        $[[T4:[0-9]+]], $[[T3]], $[[T0]]
+  ; 32R6:       andi      $[[T5:[0-9]+]], $7, 32
+  ; 32R6:       seleqz    $[[T6:[0-9]+]], $[[T4]], $[[T3]]
+  ; 32R6:       srlv      $[[T7:[0-9]+]], $4, $7
+  ; 32R6:       selnez    $[[T8:[0-9]+]], $[[T7]], $[[T5]]
+  ; 32R6:       or        $3, $[[T8]], $[[T6]]
+  ; 32R6:       jr        $ra
+  ; 32R6:       seleqz    $2, $[[T7]], $[[T5]]
+
+  ; GP64:         sll     $[[T0:[0-9]+]], $5, 0
+  ; GP64:         dsrlv   $2, $4, $[[T0]]
+
+  %r = lshr i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/or.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+
+define signext i1 @or_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: or_i1:
+
+  ; ALL:          or     $2, $4, $5
+
+  %r = or i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @or_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: or_i8:
+
+  ; ALL:          or     $2, $4, $5
+
+  %r = or i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @or_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: or_i16:
+
+  ; ALL:          or     $2, $4, $5
+
+  %r = or i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @or_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: or_i32:
+
+  ; GP32:         or     $2, $4, $5
+
+  ; GP64:         or     $[[T0:[0-9]+]], $4, $5
+  ; FIXME: The sll instruction below is redundant.
+  ; GP64:         sll     $2, $[[T0]], 0
+
+  %r = or i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @or_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: or_i64:
+
+  ; GP32:         or     $2, $4, $6
+  ; GP32:         or     $3, $5, $7
+
+  ; GP64:         or     $2, $4, $5
+
+  %r = or i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/sdiv.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=R2 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=R2 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=R6 -check-prefix=64R6
+
+define signext i1 @sdiv_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: sdiv_i1:
+
+  ; NOT-R6:       div     $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mflo    $[[T0:[0-9]+]]
+  ; FIXME: The sll/sra instructions are redundant since div is signed.
+  ; NOT-R6:       sll     $[[T1:[0-9]+]], $[[T0]], 31
+  ; NOT-R6:       sra     $2, $[[T1]], 31
+
+  ; R6:           div     $[[T0:[0-9]+]], $4, $5
+  ; R6:           teq     $5, $zero, 7
+  ; FIXME: The sll/sra instructions are redundant since div is signed.
+  ; R6:           sll     $[[T1:[0-9]+]], $[[T0]], 31
+  ; R6:           sra     $2, $[[T1]], 31
+
+  %r = sdiv i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @sdiv_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: sdiv_i8:
+
+  ; NOT-R2-R6:    div     $zero, $4, $5
+  ; NOT-R2-R6:    teq     $5, $zero, 7
+  ; NOT-R2-R6:    mflo    $[[T0:[0-9]+]]
+  ; FIXME: The sll/sra instructions are redundant since div is signed.
+  ; NOT-R2-R6:    sll     $[[T1:[0-9]+]], $[[T0]], 24
+  ; NOT-R2-R6:    sra     $2, $[[T1]], 24
+
+  ; R2:           div     $zero, $4, $5
+  ; R2:           teq     $5, $zero, 7
+  ; R2:           mflo    $[[T0:[0-9]+]]
+  ; FIXME: This instruction is redundant.
+  ; R2:           seb     $2, $[[T0]]
+
+  ; R6:           div     $[[T0:[0-9]+]], $4, $5
+  ; R6:           teq     $5, $zero, 7
+  ; FIXME: This instruction is redundant.
+  ; R6:           seb     $2, $[[T0]]
+
+  %r = sdiv i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @sdiv_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: sdiv_i16:
+
+  ; NOT-R2-R6:    div     $zero, $4, $5
+  ; NOT-R2-R6:    teq     $5, $zero, 7
+  ; NOT-R2-R6:    mflo    $[[T0:[0-9]+]]
+  ; FIXME: The sll/sra instructions are redundant since div is signed.
+  ; NOT-R2-R6:    sll     $[[T1:[0-9]+]], $[[T0]], 16
+  ; NOT-R2-R6:    sra     $2, $[[T1]], 16
+
+  ; R2:           div     $zero, $4, $5
+  ; R2:           teq     $5, $zero, 7
+  ; R2:           mflo    $[[T0:[0-9]+]]
+  ; FIXME: This is instruction is redundant since div is signed.
+  ; R2:           seh     $2, $[[T0]]
+
+  ; R6:           div     $[[T0:[0-9]+]], $4, $5
+  ; R6:           teq     $5, $zero, 7
+  ; FIXME: This is instruction is redundant since div is signed.
+  ; R6:           seh     $2, $[[T0]]
+
+  %r = sdiv i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @sdiv_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: sdiv_i32:
+
+  ; NOT-R6:       div     $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mflo    $2
+
+  ; R6:           div     $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = sdiv i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @sdiv_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: sdiv_i64:
+
+  ; GP32:         lw      $25, %call16(__divdi3)($gp)
+
+  ; GP64-NOT-R6:  ddiv    $zero, $4, $5
+  ; GP64-NOT-R6:  teq     $5, $zero, 7
+  ; GP64-NOT-R6:  mflo    $2
+
+  ; 64R6:         ddiv    $2, $4, $5
+  ; 64R6:         teq     $5, $zero, 7
+
+  %r = sdiv i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/shl.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=M2 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 -check-prefix=NOT-R2-R6 \
+; RUN:    -check-prefix=32R1-R2
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=32R1-R2 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32 \
+; RUN:    -check-prefix=32R6 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=M3 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=GP64-NOT-R6 -check-prefix R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64 \
+; RUN:    -check-prefix=64R6 -check-prefix=R2-R6
+
+define signext i1 @shl_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: shl_i1:
+
+  ; ALL:        move    $2, $4
+
+  %r = shl i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @shl_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: shl_i8:
+
+  ; NOT-R2-R6:  andi    $[[T0:[0-9]+]], $5, 255
+  ; NOT-R2-R6:  sllv    $[[T1:[0-9]+]], $4, $[[T0]]
+  ; NOT-R2-R6:  sll     $[[T2:[0-9]+]], $[[T1]], 24
+  ; NOT-R2-R6:  sra     $2, $[[T2]], 24
+
+  ; R2-R6:      andi    $[[T0:[0-9]+]], $5, 255
+  ; R2-R6:      sllv    $[[T1:[0-9]+]], $4, $[[T0]]
+  ; R2-R6:      seb     $2, $[[T1]]
+
+  %r = shl i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @shl_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: shl_i16:
+
+  ; NOT-R2-R6:  andi    $[[T0:[0-9]+]], $5, 65535
+  ; NOT-R2-R6:  sllv    $[[T1:[0-9]+]], $4, $[[T0]]
+  ; NOT-R2-R6:  sll     $[[T2:[0-9]+]], $[[T1]], 16
+  ; NOT-R2-R6:  sra     $2, $[[T2]], 16
+
+  ; R2-R6:      andi    $[[T0:[0-9]+]], $5, 65535
+  ; R2-R6:      sllv    $[[T1:[0-9]+]], $4, $[[T0]]
+  ; R2-R6:      seh     $2, $[[T1]]
+
+  %r = shl i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @shl_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: shl_i32:
+
+  ; ALL:        sllv    $2, $4, $5
+
+  %r = shl i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @shl_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: shl_i64:
+
+  ; M2:         sllv      $[[T0:[0-9]+]], $5, $7
+  ; M2:         andi      $[[T1:[0-9]+]], $7, 32
+  ; M2:         bnez      $[[T1]], $[[BB0:BB[0-9_]+]]
+  ; M2:         move      $2, $[[T0]]
+  ; M2:         sllv      $[[T2:[0-9]+]], $4, $7
+  ; M2:         not       $[[T3:[0-9]+]], $7
+  ; M2:         srl       $[[T4:[0-9]+]], $5, 1
+  ; M2:         srlv      $[[T5:[0-9]+]], $[[T4]], $[[T3]]
+  ; M2:         or        $2, $[[T2]], $[[T3]]
+  ; M2:         $[[BB0]]:
+  ; M2:         bnez      $[[T1]], $[[BB1:BB[0-9_]+]]
+  ; M2:         addiu     $3, $zero, 0
+  ; M2:         move      $3, $[[T0]]
+  ; M2:         $[[BB1]]:
+  ; M2:         jr        $ra
+  ; M2:         nop
+
+  ; 32R1-R2:    sllv      $[[T0:[0-9]+]], $4, $7
+  ; 32R1-R2:    not       $[[T1:[0-9]+]], $7
+  ; 32R1-R2:    srl       $[[T2:[0-9]+]], $5, 1
+  ; 32R1-R2:    srlv      $[[T3:[0-9]+]], $[[T2]], $[[T1]]
+  ; 32R1-R2:    or        $2, $[[T0]], $[[T3]]
+  ; 32R1-R2:    sllv      $[[T4:[0-9]+]], $5, $7
+  ; 32R1-R2:    andi      $[[T5:[0-9]+]], $7, 32
+  ; 32R1-R2:    movn      $2, $[[T4]], $[[T5]]
+  ; 32R1-R2:    jr        $ra
+  ; 32R1-R2:    movn      $3, $zero, $[[T5]]
+
+  ; 32R6:       sllv      $[[T0:[0-9]+]], $4, $7
+  ; 32R6:       not       $[[T1:[0-9]+]], $7
+  ; 32R6:       srl       $[[T2:[0-9]+]], $5, 1
+  ; 32R6:       srlv      $[[T3:[0-9]+]], $[[T2]], $[[T1]]
+  ; 32R6:       or        $[[T4:[0-9]+]], $[[T0]], $[[T3]]
+  ; 32R6:       andi      $[[T5:[0-9]+]], $7, 32
+  ; 32R6:       seleqz    $[[T6:[0-9]+]], $[[T4]], $[[T2]]
+  ; 32R6:       sllv      $[[T7:[0-9]+]], $5, $7
+  ; 32R6:       selnez    $[[T8:[0-9]+]], $[[T7]], $[[T5]]
+  ; 32R6:       or        $2, $[[T8]], $[[T6]]
+  ; 32R6:       jr        $ra
+  ; 32R6:       seleqz    $3, $[[T7]], $[[T5]]
+
+  ; GP64:       sll       $[[T0:[0-9]+]], $5, 0
+  ; GP64:       dsllv     $2, $4, $1
+
+  %r = shl i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/srem.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:  -check-prefix=GP32 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:  -check-prefix=GP32 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s -check-prefix=GP32 \
+; RUN:  -check-prefix=R2 -check-prefix=R2-R6 -check-prefix=NOT-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:   -check-prefix=GP32 -check-prefix=R6 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:  -check-prefix=R2 -check-prefix=R2-R6 \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:  -check-prefix=64R6 -check-prefix=R6 -check-prefix=R2-R6
+
+define signext i1 @srem_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: srem_i1:
+
+  ; NOT-R6:       div     $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mfhi    $[[T0:[0-9]+]]
+  ; NOT-R6:       sll     $[[T1:[0-9]+]], $[[T0]], 31
+  ; NOT-R6:       sra     $2, $[[T1]], 31
+
+  ; R6:           mod     $[[T0:[0-9]+]], $4, $5
+  ; R6:           teq     $5, $zero, 7
+  ; R6:           sll     $[[T3:[0-9]+]], $[[T0]], 31
+  ; R6:           sra     $2, $[[T3]], 31
+
+  %r = srem i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @srem_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: srem_i8:
+
+  ; NOT-R2-R6:    div     $zero, $4, $5
+  ; NOT-R2-R6:    teq     $5, $zero, 7
+  ; NOT-R2-R6:    mfhi    $[[T0:[0-9]+]]
+  ; NOT-R2-R6:    sll     $[[T1:[0-9]+]], $[[T0]], 24
+  ; NOT-R2-R6:    sra     $2, $[[T1]], 24
+
+  ; R2:           div     $zero, $4, $5
+  ; R2:           teq     $5, $zero, 7
+  ; R2:           mfhi    $[[T0:[0-9]+]]
+  ; R2:           seb     $2, $[[T0]]
+
+  ; R6:           mod     $[[T0:[0-9]+]], $4, $5
+  ; R6:           teq     $5, $zero, 7
+  ; R6:           seb     $2, $[[T0]]
+
+  %r = srem i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @srem_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: srem_i16:
+
+  ; NOT-R2-R6:    div     $zero, $4, $5
+  ; NOT-R2-R6:    teq     $5, $zero, 7
+  ; NOT-R2-R6:    mfhi    $[[T0:[0-9]+]]
+  ; NOT-R2-R6:    sll     $[[T1:[0-9]+]], $[[T0]], 16
+  ; NOT-R2-R6:    sra     $2, $[[T1]], 16
+
+  ; R2:           div     $zero, $4, $5
+  ; R2:           teq     $5, $zero, 7
+  ; R2:           mfhi    $[[T0:[0-9]+]]
+  ; R2:           seh     $2, $[[T1]]
+
+  ; R6:           mod     $[[T0:[0-9]+]], $4, $5
+  ; R6:           teq     $5, $zero, 7
+  ; R6:           seh     $2, $[[T0]]
+
+  %r = srem i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @srem_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: srem_i32:
+
+  ; NOT-R6:       div     $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mfhi    $2
+
+  ; R6:           mod     $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = srem i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @srem_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: srem_i64:
+
+  ; GP32:         lw      $25, %call16(__moddi3)($gp)
+
+  ; GP64-NOT-R6:  ddiv    $zero, $4, $5
+  ; GP64-NOT-R6:  teq     $5, $zero, 7
+  ; GP64-NOT-R6:  mfhi    $2
+
+  ; 64R6:         dmod    $2, $4, $5
+  ; 64R6:         teq     $5, $zero, 7
+
+  %r = srem i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/sub.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=NOT-R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=R2-R6 -check-prefix=GP64
+
+define signext i1 @sub_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: sub_i1:
+
+  ; ALL:            subu    $[[T0:[0-9]+]], $4, $5
+  ; ALL:            sll     $[[T0]], $[[T0]], 31
+  ; ALL:            sra     $2, $[[T0]], 31
+
+  %r = sub i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @sub_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: sub_i8:
+
+  ; NOT-R2-R6:      subu    $[[T0:[0-9]+]], $4, $5
+  ; NOT-R2-R6:      sll     $[[T0]], $[[T0]], 24
+  ; NOT-R2-R6:      sra     $2, $[[T0]], 24
+
+  ; R2-R6:          subu    $[[T0:[0-9]+]], $4, $5
+  ; R2-R6:          seb     $2, $[[T0:[0-9]+]]
+
+  %r = sub i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @sub_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: sub_i16:
+
+  ; NOT-R2-R6:      subu    $[[T0:[0-9]+]], $4, $5
+  ; NOT-R2-R6:      sll     $[[T0]], $[[T0]], 16
+  ; NOT-R2-R6:      sra     $2, $[[T0]], 16
+
+  ; R2-R6:          subu    $[[T0:[0-9]+]], $4, $5
+  ; R2-R6:          seh     $2, $[[T0:[0-9]+]]
+
+  %r = sub i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @sub_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: sub_i32:
+
+  ; ALL:            subu    $2, $4, $5
+
+  %r = sub i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @sub_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: sub_i64:
+
+  ; GP32:           subu    $3, $5, $7
+  ; GP32:           sltu    $[[T0:[0-9]+]], $5, $7
+  ; GP32:           addu    $[[T1:[0-9]+]], $[[T0]], $6
+  ; GP32:           subu    $2, $4, $[[T1]]
+
+  ; GP64:           dsubu   $2, $4, $5
+
+  %r = sub i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/udiv.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=R6 -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=NOT-R6 -check-prefix=GP64-NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=R6 -check-prefix=64R6
+
+define zeroext i1 @udiv_i1(i1 zeroext %a, i1 zeroext %b) {
+entry:
+; ALL-LABEL: udiv_i1:
+
+  ; NOT-R6:       divu    $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mflo    $2
+
+  ; R6:           divu    $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = udiv i1 %a, %b
+  ret i1 %r
+}
+
+define zeroext i8 @udiv_i8(i8 zeroext %a, i8 zeroext %b) {
+entry:
+; ALL-LABEL: udiv_i8:
+
+  ; NOT-R6:       divu    $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mflo    $2
+
+  ; R6:           divu    $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = udiv i8 %a, %b
+  ret i8 %r
+}
+
+define zeroext i16 @udiv_i16(i16 zeroext %a, i16 zeroext %b) {
+entry:
+; ALL-LABEL: udiv_i16:
+
+  ; NOT-R6:       divu    $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mflo    $2
+
+  ; R6:           divu    $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = udiv i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @udiv_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: udiv_i32:
+
+  ; NOT-R6:       divu    $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mflo    $2
+
+  ; R6:           divu    $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = udiv i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @udiv_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: udiv_i64:
+
+  ; GP32:         lw      $25, %call16(__udivdi3)($gp)
+
+  ; GP64-NOT-R6:  ddivu   $zero, $4, $5
+  ; GP64-NOT-R6:  teq     $5, $zero, 7
+  ; GP64-NOT-R6:  mflo    $2
+
+  ; 64R6:         ddivu   $2, $4, $5
+  ; 64R6:         teq     $5, $zero, 7
+
+  %r = udiv i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/urem.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:  -check-prefix=GP32 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:  -check-prefix=GP32 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s -check-prefix=GP32 \
+; RUN:  -check-prefix=R2 -check-prefix=R2-R6 -check-prefix=NOT-R6
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:   -check-prefix=GP32 -check-prefix=R6 -check-prefix=R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6 -check-prefix=NOT-R2-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:  -check-prefix=R2 -check-prefix=R2-R6 \
+; RUN:  -check-prefix=GP64-NOT-R6 -check-prefix=NOT-R6
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:  -check-prefix=64R6 -check-prefix=R6 -check-prefix=R2-R6
+
+define signext i1 @urem_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: urem_i1:
+
+  ; NOT-R6:       andi    $[[T0:[0-9]+]], $5, 1
+  ; NOT-R6:       andi    $[[T1:[0-9]+]], $4, 1
+  ; NOT-R6:       divu    $zero, $[[T1]], $[[T0]]
+  ; NOT-R6:       teq     $[[T0]], $zero, 7
+  ; NOT-R6:       mfhi    $[[T2:[0-9]+]]
+  ; NOT-R6:       sll     $[[T3:[0-9]+]], $[[T2]], 31
+  ; NOT-R6:       sra     $2, $[[T3]], 31
+
+  ; R6:           andi    $[[T0:[0-9]+]], $5, 1
+  ; R6:           andi    $[[T1:[0-9]+]], $4, 1
+  ; R6:           modu    $[[T2:[0-9]+]], $[[T1]], $[[T0]]
+  ; R6:           teq     $[[T0]], $zero, 7
+  ; R6:           sll     $[[T3:[0-9]+]], $[[T2]], 31
+  ; R6:           sra     $2, $[[T3]], 31
+
+  %r = urem i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @urem_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: urem_i8:
+
+  ; NOT-R2-R6:    andi    $[[T0:[0-9]+]], $5, 255
+  ; NOT-R2-R6:    andi    $[[T1:[0-9]+]], $4, 255
+  ; NOT-R2-R6:    divu    $zero, $[[T1]], $[[T0]]
+  ; NOT-R2-R6:    teq     $[[T0]], $zero, 7
+  ; NOT-R2-R6:    mfhi    $[[T2:[0-9]+]]
+  ; NOT-R2-R6:    sll     $[[T3:[0-9]+]], $[[T2]], 24
+  ; NOT-R2-R6:    sra     $2, $[[T3]], 24
+
+  ; R2:           andi    $[[T0:[0-9]+]], $5, 255
+  ; R2:           andi    $[[T1:[0-9]+]], $4, 255
+  ; R2:           divu    $zero, $[[T1]], $[[T0]]
+  ; R2:           teq     $[[T0]], $zero, 7
+  ; R2:           mfhi    $[[T2:[0-9]+]]
+  ; R2:           seb     $2, $[[T2]]
+
+  ; R6:           andi    $[[T0:[0-9]+]], $5, 255
+  ; R6:           andi    $[[T1:[0-9]+]], $4, 255
+  ; R6:           modu    $[[T2:[0-9]+]], $[[T1]], $[[T0]]
+  ; R6:           teq     $[[T0]], $zero, 7
+  ; R6:           seb     $2, $[[T2]]
+
+  %r = urem i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @urem_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: urem_i16:
+
+  ; NOT-R2-R6:    andi    $[[T0:[0-9]+]], $5, 65535
+  ; NOT-R2-R6:    andi    $[[T1:[0-9]+]], $4, 65535
+  ; NOT-R2-R6:    divu    $zero, $[[T1]], $[[T0]]
+  ; NOT-R2-R6:    teq     $[[T0]], $zero, 7
+  ; NOT-R2-R6:    mfhi    $[[T2:[0-9]+]]
+  ; NOT-R2-R6:    sll     $[[T3:[0-9]+]], $[[T2]], 16
+  ; NOT-R2-R6:    sra     $2, $[[T3]], 16
+
+  ; R2:           andi    $[[T0:[0-9]+]], $5, 65535
+  ; R2:           andi    $[[T1:[0-9]+]], $4, 65535
+  ; R2:           divu    $zero, $[[T1]], $[[T0]]
+  ; R2:           teq     $[[T0]], $zero, 7
+  ; R2:           mfhi    $[[T3:[0-9]+]]
+  ; R2:           seh     $2, $[[T2]]
+
+  ; R6:           andi    $[[T0:[0-9]+]], $5, 65535
+  ; R6:           andi    $[[T1:[0-9]+]], $4, 65535
+  ; R6:           modu    $[[T2:[0-9]+]], $[[T1]], $[[T0]]
+  ; R6:           teq     $[[T0]], $zero, 7
+  ; R6:           seh     $2, $[[T2]]
+
+  %r = urem i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @urem_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: urem_i32:
+
+  ; NOT-R6:       divu    $zero, $4, $5
+  ; NOT-R6:       teq     $5, $zero, 7
+  ; NOT-R6:       mfhi    $2
+
+  ; R6:           modu    $2, $4, $5
+  ; R6:           teq     $5, $zero, 7
+
+  %r = urem i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @urem_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: urem_i64:
+
+  ; GP32:         lw      $25, %call16(__umoddi3)($gp)
+
+  ; GP64-NOT-R6:  ddivu   $zero, $4, $5
+  ; GP64-NOT-R6:  teq     $5, $zero, 7
+  ; GP64-NOT-R6:  mfhi    $2
+
+  ; 64R6:         dmodu   $2, $4, $5
+  ; 64R6:         teq     $5, $zero, 7
+
+  %r = urem i64 %a, %b
+  ret i64 %r
+}

llvm/trunk/test/CodeGen/Mips/llvm-ir/xor.ll

+; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP32
+; RUN: llc < %s -march=mips64 -mcpu=mips3 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
+; RUN:    -check-prefix=ALL -check-prefix=GP64
+
+define signext i1 @xor_i1(i1 signext %a, i1 signext %b) {
+entry:
+; ALL-LABEL: xor_i1:
+
+  ; ALL:          xor     $2, $4, $5
+
+  %r = xor i1 %a, %b
+  ret i1 %r
+}
+
+define signext i8 @xor_i8(i8 signext %a, i8 signext %b) {
+entry:
+; ALL-LABEL: xor_i8:
+
+  ; ALL:          xor     $2, $4, $5
+
+  %r = xor i8 %a, %b
+  ret i8 %r
+}
+
+define signext i16 @xor_i16(i16 signext %a, i16 signext %b) {
+entry:
+; ALL-LABEL: xor_i16:
+
+  ; ALL:          xor     $2, $4, $5
+
+  %r = xor i16 %a, %b
+  ret i16 %r
+}
+
+define signext i32 @xor_i32(i32 signext %a, i32 signext %b) {
+entry:
+; ALL-LABEL: xor_i32:
+
+  ; GP32:         xor     $2, $4, $5
+
+  ; GP64:         xor     $[[T0:[0-9]+]], $4, $5
+  ; GP64:         sll     $2, $[[T0]], 0
+
+  %r = xor i32 %a, %b
+  ret i32 %r
+}
+
+define signext i64 @xor_i64(i64 signext %a, i64 signext %b) {
+entry:
+; ALL-LABEL: xor_i64:
+
+  ; GP32:         xor     $2, $4, $6
+  ; GP32:         xor     $3, $5, $7
+
+  ; GP64:         xor     $2, $4, $5
+
+  %r = xor i64 %a, %b
+  ret i64 %r
+}