290 lines
6.1 KiB
LLVM
290 lines
6.1 KiB
LLVM
; RUN: opt < %s -ipsccp -S | FileCheck %s
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; RUN: opt < %s -enable-debugify -ipsccp -debugify-quiet -disable-output
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;;======================== test1
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define internal i32 @test1a(i32 %A) {
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%X = add i32 1, 2
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ret i32 %A
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}
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; CHECK-LABEL: define internal i32 @test1a(
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; CHECK: ret i32 undef
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define i32 @test1b() {
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%X = call i32 @test1a( i32 17 )
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ret i32 %X
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; CHECK-LABEL: define i32 @test1b(
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; CHECK: ret i32 17
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}
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;;======================== test2
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define internal i32 @test2a(i32 %A) {
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%C = icmp eq i32 %A, 0
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br i1 %C, label %T, label %F
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T:
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%B = call i32 @test2a( i32 0 )
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ret i32 0
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F:
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%C.upgrd.1 = call i32 @test2a(i32 1)
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ret i32 %C.upgrd.1
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}
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; CHECK-LABEL: define internal i32 @test2a(
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; CHECK-NEXT: br label %T
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; CHECK: ret i32 undef
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define i32 @test2b() {
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%X = call i32 @test2a(i32 0)
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ret i32 %X
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}
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; CHECK-LABEL: define i32 @test2b(
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; CHECK-NEXT: %X = call i32 @test2a(i32 0)
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; CHECK-NEXT: ret i32 0
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;;======================== test3
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@G = internal global i32 undef
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define void @test3a() {
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%X = load i32, i32* @G
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store i32 %X, i32* @G
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ret void
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}
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; CHECK-LABEL: define void @test3a(
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; CHECK-NEXT: %X = load i32, i32* @G
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; CHECK-NEXT: store i32 %X, i32* @G
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; CHECK-NEXT: ret void
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define i32 @test3b() {
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%V = load i32, i32* @G
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%C = icmp eq i32 %V, 17
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br i1 %C, label %T, label %F
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T:
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store i32 17, i32* @G
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ret i32 %V
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F:
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store i32 123, i32* @G
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ret i32 0
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}
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; CHECK-LABEL: define i32 @test3b(
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; CHECK-NEXT: %V = load i32, i32* @G
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; CHECK-NEXT: %C = icmp eq i32 %V, 17
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; CHECK-NEXT: br i1 %C, label %T, label %F
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; CHECK-LABEL: T:
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; CHECK-NEXT: store i32 17, i32* @G
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; CHECK-NEXT: ret i32 17
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; CHECK-LABEL: F:
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; CHECK-NEXT: store i32 123, i32* @G
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; CHECK-NEXT: ret i32 0
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;;======================== test4
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define internal {i64,i64} @test4a() {
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%a = insertvalue {i64,i64} undef, i64 4, 1
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%b = insertvalue {i64,i64} %a, i64 5, 0
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ret {i64,i64} %b
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}
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; CHECK-LABEL: define internal { i64, i64 } @test4a(
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; CHECK-NEXT: ret { i64, i64 } undef
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; CHECK-NEXT: }
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define i64 @test4b() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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%a = invoke {i64,i64} @test4a()
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to label %A unwind label %B
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A:
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%b = extractvalue {i64,i64} %a, 0
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%c = call i64 @test4c(i64 %b)
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ret i64 %c
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B:
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%val = landingpad { i8*, i32 }
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catch i8* null
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ret i64 0
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}
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; CHECK: define i64 @test4b()
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; CHECK: %c = call i64 @test4c(i64 5)
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; CHECK-NEXT: ret i64 5
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define internal i64 @test4c(i64 %a) {
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ret i64 %a
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}
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; CHECK-LABEL: define internal i64 @test4c(
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; CHECK: ret i64 undef
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;;======================== test5
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; PR4313
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define internal {i64,i64} @test5a() {
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%a = insertvalue {i64,i64} undef, i64 4, 1
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%b = insertvalue {i64,i64} %a, i64 5, 0
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ret {i64,i64} %b
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}
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define i64 @test5b() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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%a = invoke {i64,i64} @test5a()
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to label %A unwind label %B
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A:
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%c = call i64 @test5c({i64,i64} %a)
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ret i64 %c
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B:
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%val = landingpad { i8*, i32 }
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catch i8* null
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ret i64 0
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}
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; CHECK: define i64 @test5b()
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; CHECK: A:
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; CHECK-NEXT: %c = call i64 @test5c({ i64, i64 } { i64 5, i64 4 })
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; CHECK-NEXT: ret i64 5
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define internal i64 @test5c({i64,i64} %a) {
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%b = extractvalue {i64,i64} %a, 0
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ret i64 %b
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}
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;;======================== test6
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define i64 @test6a() {
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ret i64 0
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}
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define i64 @test6b() {
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%a = call i64 @test6a()
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ret i64 %a
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}
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; CHECK-LABEL: define i64 @test6b(
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; CHECK: ret i64 0
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;;======================== test7
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%T = type {i32,i32}
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define internal %T @test7a(i32 %A) {
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%X = add i32 1, %A
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%mrv0 = insertvalue %T undef, i32 %X, 0
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%mrv1 = insertvalue %T %mrv0, i32 %A, 1
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ret %T %mrv1
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; CHECK-LABEL: @test7a(
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; CHECK-NEXT: ret %T undef
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}
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define i32 @test7b() {
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%X = call %T @test7a(i32 17)
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%Y = extractvalue %T %X, 0
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%Z = add i32 %Y, %Y
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ret i32 %Z
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; CHECK-LABEL: define i32 @test7b(
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; CHECK-NEXT: call %T @test7a(i32 17)
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; CHECK-NEXT: ret i32 36
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}
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;;======================== test8
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define internal {} @test8a(i32 %A, i32* %P) {
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store i32 %A, i32* %P
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ret {} {}
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; CHECK-LABEL: @test8a(
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; CHECK-NEXT: store i32 5,
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; CHECK-NEXT: ret
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}
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define void @test8b(i32* %P) {
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%X = call {} @test8a(i32 5, i32* %P)
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ret void
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; CHECK-LABEL: define void @test8b(
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; CHECK-NEXT: call {} @test8a
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; CHECK-NEXT: ret void
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}
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;;======================== test9
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@test9g = internal global { } zeroinitializer
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define void @test9() {
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entry:
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%local_foo = alloca { }
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load { }, { }* @test9g
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store { } %0, { }* %local_foo
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ret void
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}
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; CHECK-LABEL: define void @test9(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %local_foo = alloca {}
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; CHECK-NEXT: store {} zeroinitializer, {}* %local_foo
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; CHECK-NEXT: ret void
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declare i32 @__gxx_personality_v0(...)
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;;======================== test10
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define i32 @test10a() nounwind {
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entry:
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%call = call i32 @test10b(i32 undef)
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ret i32 %call
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; CHECK-LABEL: define i32 @test10a(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %call = call i32 @test10b(i32 undef)
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; CHECK-NEXT: ret i32 %call
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}
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define internal i32 @test10b(i32 %x) nounwind {
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entry:
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%r = and i32 %x, 1
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ret i32 %r
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; CHECK-LABEL: define internal i32 @test10b(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %r = and i32 undef, 1
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; CHECK-NEXT: ret i32 %r
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}
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;;======================== test11
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define i64 @test11a() {
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%xor = xor i64 undef, undef
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ret i64 %xor
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; CHECK-LABEL: define i64 @test11a
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; CHECK-NEXT: %xor = xor i64 undef, undef
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; CHECK-NEXT: ret i64 %xor
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}
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define i64 @test11b() {
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%call1 = call i64 @test11a()
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%call2 = call i64 @llvm.ctpop.i64(i64 %call1)
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ret i64 %call2
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; CHECK-LABEL: define i64 @test11b
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; CHECK-NEXT: [[call1:%.*]] = call i64 @test11a()
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; CHECK-NEXT: [[call2:%.*]] = call i64 @llvm.ctpop.i64(i64 [[call1]])
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; CHECK-NEXT: ret i64 [[call2]]
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}
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declare i64 @llvm.ctpop.i64(i64)
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;;======================== test12
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;; Ensure that a struct as an arg to a potentially constant-foldable
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;; function does not crash SCCP (for now it'll just ignores it)
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define i1 @test12() {
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%c = call i1 @llvm.is.constant.sl_i32i32s({i32, i32} {i32 -1, i32 32})
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ret i1 %c
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; CHECK-LABEL: define i1 @test12
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; CHECK: ret i1 %c
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}
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declare i1 @llvm.is.constant.sl_i32i32s({i32, i32} %a)
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