File: splitstore-check-volatile.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 (17 lines) | stat: -rw-r--r-- 495 bytes parent folder | download | duplicates (14) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; Test that CodeGenPrepare respect the volatile flag when splitting a store.
;
; RUN: opt -S -mtriple=powerpc64le -codegenprepare -force-split-store < %s  | FileCheck %s

define void @fun(ptr %Src, ptr %Dst) {
; CHECK: store volatile i16 %8, ptr %Dst 
  %1 = load i16, ptr %Src
  %2 = trunc i16 %1 to i8
  %3 = lshr i16 %1, 8
  %4 = trunc i16 %3 to i8
  %5 = zext i8 %2 to i16
  %6 = zext i8 %4 to i16
  %7 = shl nuw i16 %6, 8
  %8 = or i16 %7, %5
  store volatile i16 %8, ptr %Dst
  ret void
}