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Diffstat (limited to 'test/CodeGen/Thumb/iabs.ll')
-rw-r--r-- | test/CodeGen/Thumb/iabs.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb/iabs.ll b/test/CodeGen/Thumb/iabs.ll new file mode 100644 index 0000000..13084f6 --- /dev/null +++ b/test/CodeGen/Thumb/iabs.ll @@ -0,0 +1,17 @@ +; RUN: llvm-as < %s | llc -march=thumb -stats |& \ +; RUN: grep {4 .*Number of machine instrs printed} + +;; Integer absolute value, should produce something as good as: +;; Thumb: +;; asr r2, r0, #31 +;; add r0, r0, r2 +;; eor r0, r2 +;; bx lr + +define i32 @test(i32 %a) { + %tmp1neg = sub i32 0, %a + %b = icmp sgt i32 %a, -1 + %abs = select i1 %b, i32 %a, i32 %tmp1neg + ret i32 %abs +} + |