[llvm] [MachineSink] Clear kill flags of sunk addressing mode registers (PR #75072)

[Momchil Velikov via llvm-commits]

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@@ -0,0 +1,134 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
+# RUN: llc --run-pass=machine-sink %s -o - | FileCheck %s
+
+# Test that the "killed" flags is not present in the ORRWrs instruction below
+--- |
+  source_filename = "crash.ll"
+  target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
+  target triple = "aarch64-linux"
+
+  define i32 @f(ptr %image, i32 %i) {
+  entry:
+    %add = add i32 %i, 1
+    %idx = zext i32 %add to i64
+    br label %A
+
+  A:                                                ; preds = %B, %A, %entry
+    %sunkaddr = getelementptr i8, ptr %image, i64 %idx
+    %0 = load i8, ptr %sunkaddr, align 1
+    %cmp153 = icmp eq i8 %0, 0
+    br i1 %cmp153, label %B, label %A
+
+  B:                                                ; preds = %A
+    store i32 0, ptr %image, align 1
+    br label %A
+  }
+
+...
+---
+name:            f
+alignment:       4
+exposesReturnsTwice: false
+legalized:       false
+regBankSelected: false
+selected:        false
+failedISel:      false
+tracksRegLiveness: true
+hasWinCFI:       false
+callsEHReturn:   false
+callsUnwindInit: false
+hasEHCatchret:   false
+hasEHScopes:     false
+hasEHFunclets:   false
+isOutlined:      false
+debugInstrRef:   false
+failsVerification: false
+tracksDebugUserValues: false
+registers:
+  - { id: 0, class: gpr64, preferred-register: '' }
+  - { id: 1, class: gpr64common, preferred-register: '' }
+  - { id: 2, class: gpr32common, preferred-register: '' }
+  - { id: 3, class: gpr32common, preferred-register: '' }
+  - { id: 4, class: gpr32, preferred-register: '' }
+  - { id: 5, class: gpr32, preferred-register: '' }
+  - { id: 6, class: gpr32, preferred-register: '' }
+liveins:
+  - { reg: '$x0', virtual-reg: '%1' }
+  - { reg: '$w1', virtual-reg: '%2' }
+frameInfo:
+  isFrameAddressTaken: false
+  isReturnAddressTaken: false
+  hasStackMap:     false
+  hasPatchPoint:   false
+  stackSize:       0
+  offsetAdjustment: 0
+  maxAlignment:    1
+  adjustsStack:    false
+  hasCalls:        false
+  stackProtector:  ''
+  functionContext: ''
+  maxCallFrameSize: 0
+  cvBytesOfCalleeSavedRegisters: 0
+  hasOpaqueSPAdjustment: false
+  hasVAStart:      false
+  hasMustTailInVarArgFunc: false
+  hasTailCall:     false
+  localFrameSize:  0
+  savePoint:       ''
+  restorePoint:    ''
+fixedStack:      []
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momchil-velikov wrote:

Done.

https://github.com/llvm/llvm-project/pull/75072