diff --git a/test/CodeGen/Mips/llvm-ir/add-dsp.ll b/test/CodeGen/Mips/llvm-ir/add-dsp.ll
new file mode 100644
index 00000000000..9f61896829e
--- /dev/null
+++ b/test/CodeGen/Mips/llvm-ir/add-dsp.ll
@@ -0,0 +1,74 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=mips-mti-linux-gnu -mcpu=mips32r2 -mattr=+dsp < %s | FileCheck %s --check-prefix=DSP
+; RUN: llc -mtriple=mips-mti-linux-gnu -mcpu=mips32r2 -mattr=+dsp,+micromips < %s | FileCheck %s --check-prefix=MMDSP
+
+define i64 @n(i64 %a, i64 %b) {
+; DSP-LABEL: n:
+; DSP:       # %bb.0: # %entry
+; DSP-NEXT:    addsc $3, $7, $5
+; DSP-NEXT:    addwc $2, $6, $4
+; DSP-NEXT:    jr $ra
+; DSP-NEXT:    nop
+;
+; MMDSP-LABEL: n:
+; MMDSP:       # %bb.0: # %entry
+; MMDSP-NEXT:    addsc $3, $7, $5
+; MMDSP-NEXT:    addwc $2, $6, $4
+; MMDSP-NEXT:    jrc $ra
+entry:
+  %add = add i64 %b, %a
+  ret i64 %add
+}
+
+define i128 @m(i128 zeroext %a, i128 zeroext %b) {
+; DSP-LABEL: m:
+; DSP:       # %bb.0: # %entry
+; DSP-NEXT:    lw $1, 28($sp)
+; DSP-NEXT:    lw $2, 24($sp)
+; DSP-NEXT:    addsc $1, $1, $7
+; DSP-NEXT:    addwc $6, $2, $6
+; DSP-NEXT:    rddsp $2, 1
+; DSP-NEXT:    ext $3, $2, 20, 1
+; DSP-NEXT:    ins $3, $2, 6, 1
+; DSP-NEXT:    ins $3, $zero, 20, 1
+; DSP-NEXT:    lw $2, 20($sp)
+; DSP-NEXT:    wrdsp $3, 1
+; DSP-NEXT:    addwc $3, $2, $5
+; DSP-NEXT:    rddsp $2, 1
+; DSP-NEXT:    ext $5, $2, 20, 1
+; DSP-NEXT:    lw $7, 16($sp)
+; DSP-NEXT:    ins $5, $2, 6, 1
+; DSP-NEXT:    ins $5, $zero, 20, 1
+; DSP-NEXT:    wrdsp $5, 1
+; DSP-NEXT:    addwc $2, $7, $4
+; DSP-NEXT:    move $4, $6
+; DSP-NEXT:    jr $ra
+; DSP-NEXT:    move $5, $1
+;
+; MMDSP-LABEL: m:
+; MMDSP:       # %bb.0: # %entry
+; MMDSP-NEXT:    lw $1, 28($sp)
+; MMDSP-NEXT:    lw $2, 24($sp)
+; MMDSP-NEXT:    addsc $1, $1, $7
+; MMDSP-NEXT:    addwc $6, $2, $6
+; MMDSP-NEXT:    rddsp $2, 1
+; MMDSP-NEXT:    ext $3, $2, 20, 1
+; MMDSP-NEXT:    ins $3, $2, 6, 1
+; MMDSP-NEXT:    ins $3, $zero, 20, 1
+; MMDSP-NEXT:    lw $2, 20($sp)
+; MMDSP-NEXT:    wrdsp $3, 1
+; MMDSP-NEXT:    addwc $3, $2, $5
+; MMDSP-NEXT:    rddsp $2, 1
+; MMDSP-NEXT:    ext $5, $2, 20, 1
+; MMDSP-NEXT:    lw $7, 16($sp)
+; MMDSP-NEXT:    ins $5, $2, 6, 1
+; MMDSP-NEXT:    ins $5, $zero, 20, 1
+; MMDSP-NEXT:    wrdsp $5, 1
+; MMDSP-NEXT:    addwc $2, $7, $4
+; MMDSP-NEXT:    move $4, $6
+; MMDSP-NEXT:    move $5, $1
+; MMDSP-NEXT:    jrc $ra
+entry:
+  %add = add i128 %b, %a
+  ret i128 %add
+}