File: 2011-12-08-DemandedBitsMiscompile.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 (16 lines) | stat: -rw-r--r-- 468 bytes parent folder | download | duplicates (14) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=g4 | FileCheck %s

define void @test(ptr nocapture %x, ptr %xx, ptr %yp) nounwind uwtable ssp {
entry:
  %yy = load i32, ptr %yp
  %y = add i32 %yy, 1
  %z = zext i32 %y to i64
  %z2 = shl i64 %z, 32 
  store i64 %z2, ptr %xx, align 4
  ret void

; CHECK-LABEL: test:
; CHECK: sldi {{.*}}, {{.*}}, 32
; Note: it's okay if someday CodeGen gets smart enough to optimize out
; the shift.
}