File: 2007-03-24-cntlzd.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (20 lines) | stat: -rw-r--r-- 774 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
; RUN: llc -verify-machineinstrs -mcpu=g5 < %s | FileCheck %s
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"

define i32 @_ZNK4llvm5APInt17countLeadingZerosEv(i64 *%t) nounwind {
        %tmp19 = load i64, i64* %t
        %tmp22 = tail call i64 @llvm.ctlz.i64( i64 %tmp19, i1 true )             ; <i64> [#uses=1]
        %tmp23 = trunc i64 %tmp22 to i32
        %tmp89 = add i32 %tmp23, -64          ; <i32> [#uses=1]
        %tmp90 = add i32 %tmp89, 0            ; <i32> [#uses=1]
        ret i32 %tmp90

; CHECK-LABEL: @_ZNK4llvm5APInt17countLeadingZerosEv
; CHECK: ld [[REG1:[0-9]+]], 0(3)
; CHECK-NEXT: cntlzd [[REG2:[0-9]+]], [[REG1]]
; CHECK-NEXT: addi 3, [[REG2]], -64
; CHECK-NEXT: blr
}

declare i64 @llvm.ctlz.i64(i64, i1)