[llvm] aa5a1ea - [NFC] Add regression tests for an infinite loop caused by D127115

[Amaury Séchet via llvm-commits]

Author: Amaury Séchet
Date: 2023-06-08T09:07:48Z
New Revision: aa5a1eaa38bbcff64e22a0e0662843d119d3d71f

URL: https://github.com/llvm/llvm-project/commit/aa5a1eaa38bbcff64e22a0e0662843d119d3d71f
DIFF: https://github.com/llvm/llvm-project/commit/aa5a1eaa38bbcff64e22a0e0662843d119d3d71f.diff

LOG: [NFC] Add regression tests for an infinite loop caused by D127115

Added: 
    llvm/test/CodeGen/X86/brcc.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/CodeGen/X86/brcc.ll b/llvm/test/CodeGen/X86/brcc.ll
new file mode 100644
index 0000000000000..dd00354b60a6d
--- /dev/null
+++ b/llvm/test/CodeGen/X86/brcc.ll
@@ -0,0 +1,27 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
+; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s
+
+define i64 @foo(i1 %0) {
+; CHECK-LABEL: foo:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    movl $1, %eax
+; CHECK-NEXT:    testb $1, %dil
+; CHECK-NEXT:    je .LBB0_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    xorl %eax, %eax
+; CHECK-NEXT:  .LBB0_2:
+; CHECK-NEXT:    retq
+  br label %2
+
+2:
+  %3 = select i1 %0, i1 %0, i1 false
+  %4 = freeze i1 %3
+  br i1 %4, label %5, label %6
+
+5:
+  br label %6
+
+6:
+  %7 = phi i64 [ 0, %5 ], [ 1, %2 ]
+  ret i64 %7
+}