| ; 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 |
| } |