[llvm-commits] CVS: llvm/test/Transforms/InstCombine/bitcount.ll

[Reid Spencer]

Changes in directory llvm/test/Transforms/InstCombine:

bitcount.ll added (r1.1)
---
Log message:

Add a test case to make sure that constant folding of the bit counting
intrinsics works.


---
Diffs of the changes:  (+16 -0)

 bitcount.ll |   16 ++++++++++++++++
 1 files changed, 16 insertions(+)


Index: llvm/test/Transforms/InstCombine/bitcount.ll
diff -c /dev/null llvm/test/Transforms/InstCombine/bitcount.ll:1.1
*** /dev/null	Sun Apr  1 20:45:41 2007
--- llvm/test/Transforms/InstCombine/bitcount.ll	Sun Apr  1 20:45:31 2007
***************
*** 0 ****
--- 1,16 ----
+ ; Tests to make sure bit counts of constants are folded
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis -o /dev/null -f && 
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'llvm.ct'
+ 
+ declare i32 @llvm.ctpop.i31(i31 %val) 
+ declare i32 @llvm.cttz.i32(i32 %val) 
+ declare i32 @llvm.ctlz.i33(i33 %val) 
+ 
+ define i32 %test(i32 %A) {
+   %c1 = i32 call @llvm.ctpop(i31 12415124)
+   %c2 = i32 call @llvm.cttz(i32 87359874)
+   %c3 = i32 call @llvm.ctlz(i33 87359874)
+   %r1 = add i32 %c1, %c2
+   %r2 = add i32 %r1, %c3
+   ret i32 %r2
+ }