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
+ }
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