diff options
| -rw-r--r-- | llvm/lib/CodeGen/ExpandPostRAPseudos.cpp | 2 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/expand-post-ra-pseudo.mir | 11 |
2 files changed, 13 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp b/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp index bc747fc610f..f2a2bcbb94b 100644 --- a/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp +++ b/llvm/lib/CodeGen/ExpandPostRAPseudos.cpp @@ -97,6 +97,8 @@ bool ExpandPostRA::LowerSubregToReg(MachineInstr *MI) { if (MI->allDefsAreDead()) { MI->setDesc(TII->get(TargetOpcode::KILL)); + MI->RemoveOperand(3); // SubIdx + MI->RemoveOperand(1); // Imm LLVM_DEBUG(dbgs() << "subreg: replaced by: " << *MI); return true; } diff --git a/llvm/test/CodeGen/X86/expand-post-ra-pseudo.mir b/llvm/test/CodeGen/X86/expand-post-ra-pseudo.mir new file mode 100644 index 00000000000..ffc3fd6ce0d --- /dev/null +++ b/llvm/test/CodeGen/X86/expand-post-ra-pseudo.mir @@ -0,0 +1,11 @@ +# RUN: llc -o - %s -mtriple=x86_64-- -run-pass=postrapseudos | FileCheck %s +--- +# CHECK-LABEL: name: func +name: func +body: | + bb.0: + liveins: $eax + ; CHECK-NOT: dead $rax = KILL {{[0-9]+}} + ; CHECK: dead $rax = KILL killed $eax + dead $rax = SUBREG_TO_REG 0, killed $eax, %subreg.sub_32bit +... |
