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; RUN: opt < %s -ipsccp -S | FileCheck %s
;;======================== test1
define internal i32 @test1a(i32 %A) {
%X = add i32 1, 2
ret i32 %A
}
; CHECK: define internal i32 @test1a
; CHECK: ret i32 undef
define i32 @test1b() {
%X = call i32 @test1a( i32 17 )
ret i32 %X
; CHECK: 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: 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: 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* @G
store i32 %X, i32* @G
ret void
}
; CHECK: define void @test3a
; CHECK-NEXT: ret void
define i32 @test3b() {
%V = load 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: define i32 @test3b
; CHECK-NOT: store
; CHECK: 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
}
define i64 @test4b() {
%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:
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: 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() {
%a = invoke {i64,i64} @test5a()
to label %A unwind label %B
A:
%c = call i64 @test5c({i64,i64} %a)
ret i64 %c
B:
ret i64 0
}
; CHECK: define i64 @test5b()
; CHECK: A:
; CHECK-NEXT: %c = call i64 @test5c(%0 %a)
; CHECK-NEXT: ret i64 %c
define internal i64 @test5c({i64,i64} %a) {
%b = extractvalue {i64,i64} %a, 0
ret i64 %b
}
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