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TheRock/compiler/amd-llvm/llvm/test/Other/cgscc-disconnected-invalidation.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

55 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
}