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Diffstat (limited to 'test/CodeGen/X86/add-trick32.ll')
-rw-r--r-- | test/CodeGen/X86/add-trick32.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/CodeGen/X86/add-trick32.ll b/test/CodeGen/X86/add-trick32.ll new file mode 100644 index 0000000..42909b4 --- /dev/null +++ b/test/CodeGen/X86/add-trick32.ll @@ -0,0 +1,11 @@ +; RUN: llvm-as < %s | llc -march=x86 > %t +; RUN: not grep add %t +; RUN: grep subl %t | count 1 + +; The immediate can be encoded in a smaller way if the +; instruction is a sub instead of an add. + +define i32 @foo(i32 inreg %a) nounwind { + %b = add i32 %a, 128 + ret i32 %b +} |