File: profitable-memset.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (22 lines) | stat: -rw-r--r-- 816 bytes parent folder | download | duplicates (14)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s

target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"

define void @foo(ptr nocapture %P) {
; CHECK-LABEL: @foo(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i16, ptr [[P:%.*]], i64 1
; CHECK-NEXT:    [[ARRAYIDX1:%.*]] = getelementptr inbounds i16, ptr [[P:%.*]], i64 3
; CHECK-NEXT:    call void @llvm.memset.p0.i64(ptr align 2 [[P:%.*]], i8 0, i64 8, i1 false)
; CHECK-NEXT:    ret void
;
entry:
  %arrayidx = getelementptr inbounds i16, ptr %P, i64 1
  %arrayidx1 = getelementptr inbounds i16, ptr %P, i64 3
  store i16 0, ptr %P, align 2
  store i32 0, ptr %arrayidx, align 4
  store i16 0, ptr %arrayidx1, align 2
  ret void
}