Index: lib/Target/ARM/ARMCodeGenPrepare.cpp =================================================================== --- lib/Target/ARM/ARMCodeGenPrepare.cpp +++ lib/Target/ARM/ARMCodeGenPrepare.cpp @@ -562,7 +562,7 @@ bool ARMCodeGenPrepare::TryToPromote(Value *V) { OrigTy = V->getType(); TypeSize = OrigTy->getPrimitiveSizeInBits(); - if (TypeSize > 16) + if (TypeSize > 16 || TypeSize < 8) return false; if (!isSupportedValue(V) || !shouldPromote(V) || !isLegalToPromote(V)) Index: test/CodeGen/ARM/arm-cgp-icmps.ll =================================================================== --- test/CodeGen/ARM/arm-cgp-icmps.ll +++ test/CodeGen/ARM/arm-cgp-icmps.ll @@ -256,3 +256,27 @@ ret i32 %res } +; CHECK-COMMON-LABEL: icmp_i1 +; CHECK-NOT: uxt +define i32 @icmp_i1(i1* %arg0, i1 zeroext %arg1, i32 %a, i32 %b) { +entry: + %load = load i1, i1* %arg0 + %not = xor i1 %load, 1 + %cmp = icmp eq i1 %arg1, %not + %res = select i1 %cmp, i32 %a, i32 %b + ret i32 %res +} + +; CHECK-COMMON-LABEL: icmp_i7 +; CHECK-COMMON: ldrb +; CHECK-COMMON: and +; CHECK-COMMON: cmp +define i32 @icmp_i7(i7* %arg0, i7 zeroext %arg1, i32 %a, i32 %b) { +entry: + %load = load i7, i7* %arg0 + %add = add nuw i7 %load, 1 + %cmp = icmp ult i7 %arg1, %add + %res = select i1 %cmp, i32 %a, i32 %b + ret i32 %res +} +