Make instructions that conditionally set registers set them to their old value if they don't actually execute.
Make instructions that conditionally set registers set them to their old value if they don't actually execute.

--HG--
extra : convert_revision : 36e63dd0c6ac1a3e1133c7985cf5507b83e9ee45

qizenguf/MLC-STT,austinharris/gem5-riscv,rjschof/gem5,yb-kim/gemV,gedare/gem5,sobercoder/gem5,HwisooSo/gemV-update,austinharris/gem5-riscv,Weil0ng/gem5,TUD-OS/gem5-dtu,samueldotj/TeeRISC-Simulator,HwisooSo/gemV-update,powerjg/gem5-ci-test,gedare/gem5,rallylee/gem5,cancro7/gem5,KuroeKurose/gem5,powerjg/gem5-ci-test,aclifton/cpeg853-gem5,zlfben/gem5,joerocklin/gem5,samueldotj/TeeRISC-Simulator,kaiyuanl/gem5,KuroeKurose/gem5,sobercoder/gem5,powerjg/gem5-ci-test,Weil0ng/gem5,aclifton/cpeg853-gem5,aclifton/cpeg853-gem5,samueldotj/TeeRISC-Simulator,joerocklin/gem5,kaiyuanl/gem5,SanchayanMaity/gem5,gedare/gem5,samueldotj/TeeRISC-Simulator,SanchayanMaity/gem5,austinharris/gem5-riscv,joerocklin/gem5,Weil0ng/gem5,gedare/gem5,markoshorro/gem5,cancro7/gem5,gedare/gem5,markoshorro/gem5,kaiyuanl/gem5,yb-kim/gemV,austinharris/gem5-riscv,rjschof/gem5,HwisooSo/gemV-update,HwisooSo/gemV-update,KuroeKurose/gem5,qizenguf/MLC-STT,aclifton/cpeg853-gem5,gedare/gem5,briancoutinho0905/2dsampling,zlfben/gem5,TUD-OS/gem5-dtu,zlfben/gem5,powerjg/gem5-ci-test,powerjg/gem5-ci-test,qizenguf/MLC-STT,austinharris/gem5-riscv,sobercoder/gem5,gem5/gem5,markoshorro/gem5,aclifton/cpeg853-gem5,joerocklin/gem5,yb-kim/gemV,samueldotj/TeeRISC-Simulator,rallylee/gem5,rallylee/gem5,sobercoder/gem5,samueldotj/TeeRISC-Simulator,markoshorro/gem5,austinharris/gem5-riscv,aclifton/cpeg853-gem5,Weil0ng/gem5,joerocklin/gem5,aclifton/cpeg853-gem5,zlfben/gem5,sobercoder/gem5,Weil0ng/gem5,zlfben/gem5,TUD-OS/gem5-dtu,kaiyuanl/gem5,markoshorro/gem5,rjschof/gem5,SanchayanMaity/gem5,kaiyuanl/gem5,rjschof/gem5,cancro7/gem5,qizenguf/MLC-STT,SanchayanMaity/gem5,qizenguf/MLC-STT,yb-kim/gemV,austinharris/gem5-riscv,powerjg/gem5-ci-test,HwisooSo/gemV-update,markoshorro/gem5,KuroeKurose/gem5,gem5/gem5,Weil0ng/gem5,cancro7/gem5,kaiyuanl/gem5,gem5/gem5,rallylee/gem5,gem5/gem5,sobercoder/gem5,briancoutinho0905/2dsampling,TUD-OS/gem5-dtu,rjschof/gem5,markoshorro/gem5,Weil0ng/gem5,KuroeKurose/gem5,cancro7/gem5,briancoutinho0905/2dsampling,zlfben/gem5,zlfben/gem5,qizenguf/MLC-STT,kaiyuanl/gem5,gem5/gem5,briancoutinho0905/2dsampling,yb-kim/gemV,briancoutinho0905/2dsampling,TUD-OS/gem5-dtu,SanchayanMaity/gem5,sobercoder/gem5,HwisooSo/gemV-update,rallylee/gem5,TUD-OS/gem5-dtu,briancoutinho0905/2dsampling,rallylee/gem5,yb-kim/gemV,rjschof/gem5,yb-kim/gemV,SanchayanMaity/gem5,rallylee/gem5,KuroeKurose/gem5,SanchayanMaity/gem5,gem5/gem5,cancro7/gem5,joerocklin/gem5,gedare/gem5,rjschof/gem5,cancro7/gem5,powerjg/gem5-ci-test,joerocklin/gem5,briancoutinho0905/2dsampling,joerocklin/gem5,qizenguf/MLC-STT,yb-kim/gemV,TUD-OS/gem5-dtu,HwisooSo/gemV-update,KuroeKurose/gem5,samueldotj/TeeRISC-Simulator,gem5/gem5