File: extractinsert-tbaa.ll

package info (click to toggle)
llvm-toolchain-6.0 1:6.0-1~bpo9+1
  • links: PTS, VCS
  • area: main
  • in suites: stretch-backports
  • size: 594,652 kB
  • sloc: cpp: 3,044,500; ansic: 595,051; asm: 271,890; python: 128,923; objc: 106,554; sh: 21,854; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,214; cs: 2,027; xml: 686; php: 212; csh: 117
file content (45 lines) | stat: -rw-r--r-- 1,552 bytes parent folder | download | duplicates (17)
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
; RUN: opt -S -instcombine %s -o - | FileCheck %s

%Complex = type { double, double }

; Check that instcombine preserves TBAA when narrowing loads
define double @teststructextract(%Complex *%val) {
; CHECK: load double, {{.*}}, !tbaa
; CHECK-NOT: load %Complex
    %loaded = load %Complex, %Complex *%val, !tbaa !1
    %real = extractvalue %Complex %loaded, 0
    ret double %real
}

define double @testarrayextract([2 x double] *%val) {
; CHECK: load double, {{.*}}, !tbaa
; CHECK-NOT: load [2 x double]
    %loaded = load [2 x double], [2 x double] *%val, !tbaa !1
    %real = extractvalue [2 x double] %loaded, 0
    ret double %real
}

; Check that inscombine preserves TBAA when breaking up stores
define void @teststructinsert(%Complex *%loc, double %a, double %b) {
; CHECK: store double %a, {{.*}}, !tbaa
; CHECK: store double %b, {{.*}}, !tbaa
; CHECK-NOT: store %Complex
    %inserted  = insertvalue %Complex undef,      double %a, 0
    %inserted2 = insertvalue %Complex %inserted,  double %b, 1
    store %Complex %inserted2, %Complex *%loc, !tbaa !1
    ret void
}

define void @testarrayinsert([2 x double] *%loc, double %a, double %b) {
; CHECK: store double %a, {{.*}}, !tbaa
; CHECK: store double %b, {{.*}}, !tbaa
; CHECK-NOT: store [2 x double]
    %inserted  = insertvalue [2 x double] undef,      double %a, 0
    %inserted2 = insertvalue [2 x double] %inserted,  double %b, 1
    store [2 x double] %inserted2, [2 x double] *%loc, !tbaa !1
    ret void
}

!0 = !{!"tbaa_root"}
!1 = !{!2, !2, i64 0}
!2 = !{!"Complex", !0, i64 0}