File: crash-on-pow2-shufflevector.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (21 lines) | stat: -rw-r--r-- 779 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=armv7 | FileCheck %s
;
; Ensure that don't crash given a largeish power-of-two shufflevector index.

%struct.desc = type { i32, [7 x i32] }

define i32 @foo(ptr %descs, i32 %num, i32 %cw) local_unnamed_addr #0 {
; CHECK-LABEL: foo:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    vldr d16, [r0, #32]
; CHECK-NEXT:    vadd.i32 d16, d16, d16
; CHECK-NEXT:    vmov.32 r0, d16[0]
; CHECK-NEXT:    bx lr
entry:
  %wide.vec = load <16 x i32>, ptr %descs, align 4
  %strided.vec = shufflevector <16 x i32> %wide.vec, <16 x i32> undef, <2 x i32> <i32 0, i32 8>
  %bin.rdx20 = add <2 x i32> %strided.vec, %strided.vec
  %0 = extractelement <2 x i32> %bin.rdx20, i32 1
  ret i32 %0
}