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llvm-mirror/test/CodeGen/PowerPC/cttz.ll
Hal Finkel 91f52b0e31 [PowerPC] Replace cntlz[.] with cntlzw[.]
cntlz is the old POWER mnemonic. cntlzw is the PowerPC mnemonic.

This change fixes an issue when -no-integrated-as: The opcode cntlz is
unrecognized by gas

Alias the POWER mnemonic cntlz[.] to the PowerPC mnemonic cntlzw[.]
This is done for because the POWER cntlz mnemonic has be used by LLVM for
a very long time. We need to make sure that assembly programs
that are using the cntlz[.] do not break with this change.

Change PowerPC tests to reflect the insn change from cntlz to cntlzw.
Add assembly test to verify cntlz[.] is encoded correctly.

Patch by Tom Rix!

llvm-svn: 251489
2015-10-28 03:26:45 +00:00

14 lines
316 B
LLVM

; Make sure this testcase does not use ctpop
; RUN: llc < %s -march=ppc32 -mcpu=g5 | FileCheck %s
declare i32 @llvm.cttz.i32(i32, i1)
define i32 @bar(i32 %x) {
entry:
; CHECK: @bar
; CHECK: cntlzw
%tmp.1 = call i32 @llvm.cttz.i32( i32 %x, i1 true ) ; <i32> [#uses=1]
ret i32 %tmp.1
}