diff --git a/src/alloy/compiler/passes/context_promotion_pass.cc b/src/alloy/compiler/passes/context_promotion_pass.cc
index 6d9e062f1..d2e29fcec 100644
--- a/src/alloy/compiler/passes/context_promotion_pass.cc
+++ b/src/alloy/compiler/passes/context_promotion_pass.cc
@@ -120,7 +120,6 @@ void ContextPromotionPass::RemoveDeadStoresBlock(Block* block) {
     Instr* prev = i->prev;
     if (i->opcode == &OPCODE_STORE_CONTEXT_info) {
       size_t offset = i->src1.offset;
-      Value* value = i->src2.value;
       if (context_values_[offset] != token) {
         // Mark offset as written to.
         context_values_[offset] = token;
diff --git a/src/alloy/frontend/ppc/ppc_emit_altivec.cc b/src/alloy/frontend/ppc/ppc_emit_altivec.cc
index c6f34dad6..181ba4378 100644
--- a/src/alloy/frontend/ppc/ppc_emit_altivec.cc
+++ b/src/alloy/frontend/ppc/ppc_emit_altivec.cc
@@ -334,7 +334,6 @@ int InstrEmit_stvrx_(PPCFunctionBuilder& f, InstrData& i, uint32_t vd, uint32_t
   //       we could optimize this to prevent the other load/mask, in that case.
   Value* ea = ra ? f.Add(f.LoadGPR(ra), f.LoadGPR(rb)) : f.LoadGPR(rb);
   Value* eb = f.And(f.Truncate(ea, INT8_TYPE), f.LoadConstant((int8_t)0xF));
-  Value* ebits = f.Mul(eb, f.LoadConstant((int8_t)8));
   Value* new_value = f.LoadVR(vd);
   // ea &= ~0xF (load takes care of this)
   Value* old_value = f.ByteSwap(f.Load(ea, VEC128_TYPE));
diff --git a/src/alloy/frontend/ppc/ppc_emit_alu.cc b/src/alloy/frontend/ppc/ppc_emit_alu.cc
index c05f60267..5c0206f0e 100644
--- a/src/alloy/frontend/ppc/ppc_emit_alu.cc
+++ b/src/alloy/frontend/ppc/ppc_emit_alu.cc
@@ -957,7 +957,6 @@ XEEMITTER(rlwimix,      0x50000000, M  )(PPCFunctionBuilder& f, InstrData& i) {
     v = f.And(v, f.LoadConstant(m));
   }
   v = f.ZeroExtend(v, INT64_TYPE);
-  Value* ra = f.LoadGPR(i.M.RA);
   v = f.Or(v, f.And(f.LoadGPR(i.M.RA), f.LoadConstant((~(uint64_t)m))));
   if (i.M.Rc) {
     f.UpdateCR(0, v);