[llvm] r335233 - [CodeGen] Avoid handling DBG_VALUE in LiveRegUnits::stepBackward

[via llvm-commits]

No test?
--paulr

> -----Original Message-----
> From: llvm-commits [mailto:llvm-commits-bounces at lists.llvm.org] On Behalf
> Of Krzysztof Parzyszek via llvm-commits
> Sent: Thursday, June 21, 2018 9:39 AM
> To: llvm-commits at lists.llvm.org
> Subject: [llvm] r335233 - [CodeGen] Avoid handling DBG_VALUE in
> LiveRegUnits::stepBackward
> 
> Author: kparzysz
> Date: Thu Jun 21 06:38:43 2018
> New Revision: 335233
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=335233&view=rev
> Log:
> [CodeGen] Avoid handling DBG_VALUE in LiveRegUnits::stepBackward
> 
> Patch by Jesper Antonsson.
> 
> Differential Revision: https://reviews.llvm.org/D48420
> 
> Modified:
>     llvm/trunk/lib/CodeGen/LiveRegUnits.cpp
> 
> Modified: llvm/trunk/lib/CodeGen/LiveRegUnits.cpp
> URL: http://llvm.org/viewvc/llvm-
> project/llvm/trunk/lib/CodeGen/LiveRegUnits.cpp?rev=335233&r1=335232&r2=33
> 5233&view=diff
> ==========================================================================
> ====
> --- llvm/trunk/lib/CodeGen/LiveRegUnits.cpp (original)
> +++ llvm/trunk/lib/CodeGen/LiveRegUnits.cpp Thu Jun 21 06:38:43 2018
> @@ -46,7 +46,7 @@ void LiveRegUnits::stepBackward(const Ma
>    // Remove defined registers and regmask kills from the set.
>    for (ConstMIBundleOperands O(MI); O.isValid(); ++O) {
>      if (O->isReg()) {
> -      if (!O->isDef())
> +      if (!O->isDef() || O->isDebug())
>          continue;
>        unsigned Reg = O->getReg();
>        if (!TargetRegisterInfo::isPhysicalRegister(Reg))
> @@ -58,7 +58,7 @@ void LiveRegUnits::stepBackward(const Ma
> 
>    // Add uses to the set.
>    for (ConstMIBundleOperands O(MI); O.isValid(); ++O) {
> -    if (!O->isReg() || !O->readsReg())
> +    if (!O->isReg() || !O->readsReg() || O->isDebug())
>        continue;
>      unsigned Reg = O->getReg();
>      if (!TargetRegisterInfo::isPhysicalRegister(Reg))
> 
> 
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits