forked from OSchip/llvm-project
68 lines
1.6 KiB
LLVM
68 lines
1.6 KiB
LLVM
; RUN: opt < %s -functionattrs -S | FileCheck %s
|
|
@x = global i32 0
|
|
|
|
declare void @test1_1(i8* %x1_1, i8* readonly %y1_1, ...)
|
|
|
|
; CHECK: define void @test1_2(i8* %x1_2, i8* readonly %y1_2, i8* %z1_2)
|
|
define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2) {
|
|
call void (i8*, i8*, ...)* @test1_1(i8* %x1_2, i8* %y1_2, i8* %z1_2)
|
|
store i32 0, i32* @x
|
|
ret void
|
|
}
|
|
|
|
; CHECK: define i8* @test2(i8* readnone %p)
|
|
define i8* @test2(i8* %p) {
|
|
store i32 0, i32* @x
|
|
ret i8* %p
|
|
}
|
|
|
|
; CHECK: define i1 @test3(i8* readnone %p, i8* readnone %q)
|
|
define i1 @test3(i8* %p, i8* %q) {
|
|
%A = icmp ult i8* %p, %q
|
|
ret i1 %A
|
|
}
|
|
|
|
declare void @test4_1(i8* nocapture) readonly
|
|
|
|
; CHECK: define void @test4_2(i8* nocapture readonly %p)
|
|
define void @test4_2(i8* %p) {
|
|
call void @test4_1(i8* %p)
|
|
ret void
|
|
}
|
|
|
|
; CHECK: define void @test5(i8** nocapture %p, i8* %q)
|
|
; Missed optz'n: we could make %q readnone, but don't break test6!
|
|
define void @test5(i8** %p, i8* %q) {
|
|
store i8* %q, i8** %p
|
|
ret void
|
|
}
|
|
|
|
declare void @test6_1()
|
|
; CHECK: define void @test6_2(i8** nocapture %p, i8* %q)
|
|
; This is not a missed optz'n.
|
|
define void @test6_2(i8** %p, i8* %q) {
|
|
store i8* %q, i8** %p
|
|
call void @test6_1()
|
|
ret void
|
|
}
|
|
|
|
; CHECK: define void @test7_1(i32* inalloca nocapture %a)
|
|
; inalloca parameters are always considered written
|
|
define void @test7_1(i32* inalloca %a) {
|
|
ret void
|
|
}
|
|
|
|
; CHECK: define i32* @test8_1(i32* readnone %p)
|
|
define i32* @test8_1(i32* %p) {
|
|
entry:
|
|
ret i32* %p
|
|
}
|
|
|
|
; CHECK: define void @test8_2(i32* %p)
|
|
define void @test8_2(i32* %p) {
|
|
entry:
|
|
%call = call i32* @test8_1(i32* %p)
|
|
store i32 10, i32* %call, align 4
|
|
ret void
|
|
}
|