diff options
Diffstat (limited to 'test/CodeGen/X86/2004-04-09-SameValueCoalescing.ll')
| -rw-r--r-- | test/CodeGen/X86/2004-04-09-SameValueCoalescing.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2004-04-09-SameValueCoalescing.ll b/test/CodeGen/X86/2004-04-09-SameValueCoalescing.ll new file mode 100644 index 0000000000..633a615645 --- /dev/null +++ b/test/CodeGen/X86/2004-04-09-SameValueCoalescing.ll @@ -0,0 +1,13 @@ +; Linear scan does not currently coalesce any two variables that have +; overlapping live intervals. When two overlapping intervals have the same +; value, they can be joined though. +; +; RUN: llvm-as < %s | llc -march=x86 -regalloc=linearscan | \ +; RUN: not grep {mov %\[A-Z\]\\\{2,3\\\}, %\[A-Z\]\\\{2,3\\\}} + +define i64 @test(i64 %x) { +entry: + %tmp.1 = mul i64 %x, 4294967297 ; <i64> [#uses=1] + ret i64 %tmp.1 +} + |