diff --git a/lib/Target/MSP430/MSP430BranchSelector.cpp b/lib/Target/MSP430/MSP430BranchSelector.cpp
index b1d6966caeb..bd644435c76 100644
--- a/lib/Target/MSP430/MSP430BranchSelector.cpp
+++ b/lib/Target/MSP430/MSP430BranchSelector.cpp
@@ -10,7 +10,7 @@
 // This file contains a pass that scans a machine function to determine which
 // conditional branches need more than 10 bits of displacement to reach their
 // target basic block.  It does this in two passes; a calculation of basic block
-// positions pass, and a branch psuedo op to machine branch opcode pass.  This
+// positions pass, and a branch pseudo op to machine branch opcode pass.  This
 // pass should be run last, just before the assembly printer.
 //
 //===----------------------------------------------------------------------===//
diff --git a/lib/Target/PowerPC/PPCBranchSelector.cpp b/lib/Target/PowerPC/PPCBranchSelector.cpp
index df24e96b8e8..e161d23600e 100644
--- a/lib/Target/PowerPC/PPCBranchSelector.cpp
+++ b/lib/Target/PowerPC/PPCBranchSelector.cpp
@@ -10,7 +10,7 @@
 // This file contains a pass that scans a machine function to determine which
 // conditional branches need more than 16 bits of displacement to reach their
 // target basic block.  It does this in two passes; a calculation of basic block
-// positions pass, and a branch psuedo op to machine branch opcode pass.  This
+// positions pass, and a branch pseudo op to machine branch opcode pass.  This
 // pass should be run last, just before the assembly printer.
 //
 //===----------------------------------------------------------------------===//
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp
index ec3201ab76e..824021c0c88 100644
--- a/lib/Target/X86/X86CodeEmitter.cpp
+++ b/lib/Target/X86/X86CodeEmitter.cpp
@@ -702,7 +702,7 @@ void Emitter<CodeEmitter>::emitInstruction(const MachineInstr &MI,
     // base address.
     switch (Opcode) {
     default: 
-      llvm_unreachable("psuedo instructions should be removed before code"
+      llvm_unreachable("pseudo instructions should be removed before code"
                        " emission");
       break;
     // Do nothing for Int_MemBarrier - it's just a comment.  Add a debug