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Diffstat (limited to 'llvm/test/Other/debugcounter-newgvn.ll')
| -rw-r--r-- | llvm/test/Other/debugcounter-newgvn.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/Other/debugcounter-newgvn.ll b/llvm/test/Other/debugcounter-newgvn.ll new file mode 100644 index 00000000000..cfe043c8455 --- /dev/null +++ b/llvm/test/Other/debugcounter-newgvn.ll @@ -0,0 +1,22 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; REQUIRES: asserts +; RUN: opt -S -debug-counter=newgvn-vn-skip=1,newgvn-vn-count=2 -newgvn < %s 2>&1 | FileCheck %s +;; Test that, with debug counters on, we don't value number the first instruction, only the second and third, +;; which means we do not discover the return is constant. +define i32 @vntest() { +; CHECK-LABEL: @vntest( +; CHECK-NEXT: bb: +; CHECK-NEXT: [[A:%.*]] = add i32 1, 3 +; CHECK-NEXT: [[D:%.*]] = add i32 8, 8 +; CHECK-NEXT: ret i32 [[D]] +; +bb: + %a = add i32 1, 3 + %b = add i32 %a, %a + %c = add i32 %a, %a + %d = add i32 %b, %c + ret i32 %d +} + + + |
