[llvm-commits] CVS: llvm/test/Regression/CodeGen/PowerPC/cttz.ll

[Nate Begeman]

Changes in directory llvm/test/Regression/CodeGen/PowerPC:

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

Add testcase for legalizing ISD::CTTZ efficiently.  On PPC, ctlz(int) is
now codegen'd as this:

        addi r2, r3, -1
        andc r2, r2, r3
        cntlzw r2, r2
        subfic r3, r2, 32
        blr


---
Diffs of the changes:  (+12 -0)

 cttz.ll |   12 ++++++++++++
 1 files changed, 12 insertions(+)


Index: llvm/test/Regression/CodeGen/PowerPC/cttz.ll
diff -c /dev/null llvm/test/Regression/CodeGen/PowerPC/cttz.ll:1.1
*** /dev/null	Wed May 11 18:46:04 2005
--- llvm/test/Regression/CodeGen/PowerPC/cttz.ll	Wed May 11 18:45:54 2005
***************
*** 0 ****
--- 1,12 ----
+ ; Make sure this testcase does not use ctpop
+ ; RUN: llvm-as < %s | llc -march=ppc32 | grep -i 'cntlzw'
+ 
+ declare int %llvm.cttz(int)
+ 
+ implementation   ; Functions:
+ 
+ int %bar(int %x) {
+ entry:
+ 	%tmp.1 = call int %llvm.cttz( int %x ) 
+ 	ret int %tmp.1
+ }