54 lines
1.2 KiB
LLVM
54 lines
1.2 KiB
LLVM
; Test that patterns of transformations which disconnect a region of the call
|
|
; graph mid-traversal and then invalidate it function correctly.
|
|
;
|
|
; RUN: opt -S -passes='cgscc(inline,function(simplifycfg))' < %s | FileCheck %s
|
|
|
|
define internal void @test_scc_internal(i1 %flag) {
|
|
; CHECK-NOT: @test_scc_internal
|
|
entry:
|
|
br i1 %flag, label %then, label %else
|
|
|
|
then:
|
|
call void @test_scc_internal(i1 false)
|
|
call void @test_scc_external()
|
|
br label %else
|
|
|
|
else:
|
|
ret void
|
|
}
|
|
|
|
define void @test_scc_external() {
|
|
; CHECK-LABEL: define void @test_scc_external()
|
|
entry:
|
|
call void @test_scc_internal(i1 false)
|
|
ret void
|
|
}
|
|
|
|
define internal void @test_refscc_internal(i1 %flag, ptr %ptr) {
|
|
; CHECK-NOT: @test_refscc_internal
|
|
entry:
|
|
br i1 %flag, label %then, label %else
|
|
|
|
then:
|
|
call void @test_refscc_internal(i1 false, ptr @test_refscc_external)
|
|
br label %else
|
|
|
|
else:
|
|
ret void
|
|
}
|
|
|
|
define ptr @test_refscc_external() {
|
|
; CHECK-LABEL: define ptr @test_refscc_external()
|
|
entry:
|
|
br i1 true, label %then, label %else
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: ret ptr null
|
|
; CHECK-NEXT: }
|
|
; CHECK-NOT: @test_refscc_internal
|
|
|
|
then:
|
|
ret ptr null
|
|
|
|
else:
|
|
ret ptr @test_refscc_internal
|
|
}
|