forked from OSchip/llvm-project
70 lines
2.7 KiB
LLVM
70 lines
2.7 KiB
LLVM
|
; RUN: opt -instcombine -S < %s | FileCheck %s
|
||
|
|
|
||
|
|
@g1 = common global i32* null, align 8
|
||
|
|
|
||
|
|
%struct.S1 = type { i32, float }
|
||
|
|
%struct.S2 = type { float, i32 }
|
||
|
|
|
||
|
|
; Check that instcombine preserves metadata when it merges two loads.
|
||
|
|
;
|
||
|
|
; CHECK: return:
|
||
|
|
; CHECK: load i32*, i32** %{{[a-z0-9.]+}}, align 8, !nonnull ![[EMPTYNODE:[0-9]+]]
|
||
|
|
; CHECK: load i32, i32* %{{[a-z0-9.]+}}, align 4, !tbaa ![[TBAA:[0-9]+]], !range ![[RANGE:[0-9]+]], !invariant.load ![[EMPTYNODE:[0-9]+]], !alias.scope ![[ALIAS_SCOPE:[0-9]+]], !noalias ![[NOALIAS:[0-9]+]]
|
||
|
|
|
||
|
|
; Function Attrs: nounwind ssp uwtable
|
||
|
|
define i32 @phi_load_metadata(%struct.S1* %s1, %struct.S2* %s2, i32 %c, i32** %x0, i32 **%x1) #0 {
|
||
|
|
entry:
|
||
|
|
%tobool = icmp eq i32 %c, 0
|
||
|
|
br i1 %tobool, label %if.end, label %if.then
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
%i = getelementptr inbounds %struct.S2, %struct.S2* %s2, i64 0, i32 1
|
||
|
|
%val = load i32, i32* %i, align 4, !tbaa !0, !alias.scope !13, !noalias !14, !invariant.load !17, !range !18
|
||
|
|
%p0 = load i32*, i32** %x0, align 8, !nonnull !17
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.end: ; preds = %entry
|
||
|
|
%i2 = getelementptr inbounds %struct.S1, %struct.S1* %s1, i64 0, i32 0
|
||
|
|
%val2 = load i32, i32* %i2, align 4, !tbaa !2, !alias.scope !15, !noalias !16, !invariant.load !17, !range !19
|
||
|
|
%p1 = load i32*, i32** %x1, align 8, !nonnull !17
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.end, %if.then
|
||
|
|
%retval = phi i32 [ %val, %if.then ], [ %val2, %if.end ]
|
||
|
|
%pval = phi i32* [ %p0, %if.then ], [ %p1, %if.end ]
|
||
|
|
store i32* %pval, i32** @g1, align 8
|
||
|
|
ret i32 %retval
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK: ![[EMPTYNODE]] = !{}
|
||
|
|
; CHECK: ![[TBAA]] = !{![[TAG1:[0-9]+]], ![[TAG1]], i64 0}
|
||
|
|
; CHECK: ![[TAG1]] = !{!"int", !{{[0-9]+}}, i64 0}
|
||
|
|
; CHECK: ![[RANGE]] = !{i32 10, i32 25}
|
||
|
|
; CHECK: ![[ALIAS_SCOPE]] = !{![[SCOPE0:[0-9]+]], ![[SCOPE1:[0-9]+]], ![[SCOPE2:[0-9]+]]}
|
||
|
|
; CHECK: ![[SCOPE0]] = distinct !{![[SCOPE0]], !{{[0-9]+}}, !"scope0"}
|
||
|
|
; CHECK: ![[SCOPE1]] = distinct !{![[SCOPE1]], !{{[0-9]+}}, !"scope1"}
|
||
|
|
; CHECK: ![[SCOPE2]] = distinct !{![[SCOPE2]], !{{[0-9]+}}, !"scope2"}
|
||
|
|
; CHECK: ![[NOALIAS]] = !{![[SCOPE3:[0-9]+]]}
|
||
|
|
; CHECK: ![[SCOPE3]] = distinct !{![[SCOPE3]], !{{[0-9]+}}, !"scope3"}
|
||
|
|
|
||
|
|
!0 = !{!1, !4, i64 4}
|
||
|
|
!1 = !{!"", !7, i64 0, !4, i64 4}
|
||
|
|
!2 = !{!3, !4, i64 0}
|
||
|
|
!3 = !{!"", !4, i64 0, !7, i64 4}
|
||
|
|
!4 = !{!"int", !5, i64 0}
|
||
|
|
!5 = !{!"omnipotent char", !6, i64 0}
|
||
|
|
!6 = !{!"Simple C/C++ TBAA"}
|
||
|
|
!7 = !{!"float", !5, i64 0}
|
||
|
|
!8 = !{!8, !"some domain"}
|
||
|
|
!9 = !{!9, !8, !"scope0"}
|
||
|
|
!10 = !{!10, !8, !"scope1"}
|
||
|
|
!11 = !{!11, !8, !"scope2"}
|
||
|
|
!12 = !{!12, !8, !"scope3"}
|
||
|
|
!13 = !{!9, !10}
|
||
|
|
!14 = !{!11, !12}
|
||
|
|
!15 = !{!9, !11}
|
||
|
|
!16 = !{!10, !12}
|
||
|
|
!17 = !{}
|
||
|
|
!18 = !{i32 10, i32 20}
|
||
|
|
!19 = !{i32 15, i32 25}
|