return true;
}
- // Otherwise, if an instruction is using a negative immediate we will need
- // to fix it up during the promotion.
- for (auto &Op : I->operands()) {
- if (auto *Const = dyn_cast<ConstantInt>(Op))
- if (Const->isNegative())
- return false;
- }
return false;
}
};
auto FixConst = [&](ConstantInt *Const, Instruction *I) {
- Constant *NewConst = nullptr;
- if (isSafeOverflow(I)) {
- NewConst = (Const->isNegative()) ?
- ConstantExpr::getSExt(Const, ExtTy) :
- ConstantExpr::getZExt(Const, ExtTy);
- } else {
- uint64_t NewVal = *Const->getValue().getRawData();
- if (Const->getType() == Type::getInt16Ty(Ctx))
- NewVal &= 0xFFFF;
- else
- NewVal &= 0xFF;
- NewConst = ConstantInt::get(ExtTy, NewVal);
- }
+ Constant *NewConst = isSafeOverflow(I) && Const->isNegative() ?
+ ConstantExpr::getSExt(Const, ExtTy) :
+ ConstantExpr::getZExt(Const, ExtTy);
I->replaceUsesOfWith(Const, NewConst);
};
-; RUN: llc -mtriple=thumbv8.main -mcpu=cortex-m33 %s -arm-disable-cgp=false -o - | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-NODSP
+; RUN: llc -mtriple=thumbv8m.main -mcpu=cortex-m33 %s -arm-disable-cgp=false -o - | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-NODSP
; RUN: llc -mtriple=thumbv7em %s -arm-disable-cgp=false -arm-enable-scalar-dsp=true -o - | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-DSP
; RUN: llc -mtriple=thumbv8 %s -arm-disable-cgp=false -arm-enable-scalar-dsp=true -arm-enable-scalar-dsp-imms=true -o - | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-DSP-IMM
ret i32 %res
}
+; CHECK-COMMON-LABEL: icmp_i15
+; CHECK-COMMON: movw [[MINUS_ONE:r[0-9]+]], #32767
+define i32 @icmp_i15(i15 zeroext %arg0, i15 zeroext %arg1) {
+ %xor = xor i15 %arg0, -1
+ %cmp = icmp eq i15 %xor, %arg1
+ %res = select i1 %cmp, i32 21, i32 42
+ ret i32 %res
+}
+