File: phi-load-metadata.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (30 lines) | stat: -rw-r--r-- 666 bytes parent folder | download | duplicates (19) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
; RUN: opt -instcombine -S < %s | FileCheck %s

declare void @bar()
declare void @baz()

; Check that align metadata is combined
; CHECK-LABEL: cont:
; CHECK: load i32*, i32**
; CHECK-SAME: !align ![[ALIGN:[0-9]+]]
define i32* @test_phi_combine_load_metadata(i1 %c, i32** dereferenceable(8) %p1, i32** dereferenceable(8) %p2) {
  br i1 %c, label %t, label %f
t:
  call void @bar()
  %v1 = load i32*, i32** %p1, align 8, !align !0
  br label %cont

f:
  call void @baz()
  %v2 = load i32*, i32** %p2, align 8, !align !1
  br label %cont

cont:
  %res = phi i32* [ %v1, %t ], [ %v2, %f ]
  ret i32* %res
}

; CHECK: ![[ALIGN]] = !{i64 8}

!0 = !{i64 8}
!1 = !{i64 16}