[llvm-commits] CVS: llvm/test/CodeGen/ARM/iabs.ll

[Chris Lattner]

Changes in directory llvm/test/CodeGen/ARM:

iabs.ll added (r1.1)
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Log message:

new testcases for integer abs function


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Diffs of the changes:  (+20 -0)

 iabs.ll |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+)


Index: llvm/test/CodeGen/ARM/iabs.ll
diff -c /dev/null llvm/test/CodeGen/ARM/iabs.ll:1.1
*** /dev/null	Wed Apr 11 00:03:07 2007
--- llvm/test/CodeGen/ARM/iabs.ll	Wed Apr 11 00:02:57 2007
***************
*** 0 ****
--- 1,20 ----
+ ; RUN: llvm-as < %s | llc -march=arm -stats 2>&1 | grep '3 .*Number of machine instrs printed' &&
+ ; RUN: llvm-as < %s | llc -march=thumb -stats 2>&1 | grep '4 .*Number of machine instrs printed'
+ 
+ ;; Integer absolute value, should produce something as good as: ARM:
+ ;;   add r3, r0, r0, asr #31
+ ;;   eor r0, r3, r0, asr #31
+ ;;   bx lr
+ ;; 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
+ }
+