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7b093a1c2f
functions. Make the function attributes pass add it to known library functions and when it can deduce it. llvm-svn: 185735
48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
; RUN: opt < %s -functionattrs -S | FileCheck %s
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@x = global i32 0
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declare void @test1_1(i8* %x1_1, i8* readonly %y1_1, ...)
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; CHECK: define void @test1_2(i8* %x1_2, i8* readonly %y1_2, i8* %z1_2)
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define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2) {
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call void (i8*, i8*, ...)* @test1_1(i8* %x1_2, i8* %y1_2, i8* %z1_2)
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store i32 0, i32* @x
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ret void
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}
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; CHECK: define i8* @test2(i8* readnone %p)
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define i8* @test2(i8* %p) {
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store i32 0, i32* @x
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ret i8* %p
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}
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; CHECK: define i1 @test3(i8* readnone %p, i8* readnone %q)
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define i1 @test3(i8* %p, i8* %q) {
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%A = icmp ult i8* %p, %q
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ret i1 %A
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}
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declare void @test4_1(i8* nocapture) readonly
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; CHECK: define void @test4_2(i8* nocapture readonly %p)
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define void @test4_2(i8* %p) {
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call void @test4_1(i8* %p)
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ret void
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}
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; CHECK: define void @test5(i8** nocapture %p, i8* %q)
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; Missed optz'n: we could make %q readnone, but don't break test6!
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define void @test5(i8** %p, i8* %q) {
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store i8* %q, i8** %p
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ret void
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}
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declare void @test6_1()
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; CHECK: define void @test6_2(i8** nocapture %p, i8* %q)
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; This is not a missed optz'n.
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define void @test6_2(i8** %p, i8* %q) {
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store i8* %q, i8** %p
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call void @test6_1()
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ret void
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}
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