File: 2006-04-28-ShiftShiftLongLong.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (13 lines) | stat: -rw-r--r-- 358 bytes parent folder | download | duplicates (13) 
1
2
3
4
5
6
7
8
9
10
11
12
13
 
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

; This cannot be turned into a sign extending cast!

define i64 @test(i64 %X) {
        %Y = shl i64 %X, 16             ; <i64> [#uses=1]
; CHECK: %Y = shl i64 %X, 16
        %Z = ashr i64 %Y, 16            ; <i64> [#uses=1]
; CHECK: %Z = ashr exact i64 %Y, 16
        ret i64 %Z
; CHECK: ret i64 %Z
}