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