mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-04 07:29:20 +00:00
1afcace3a3
patch brings numerous advantages to LLVM. One way to look at it is through diffstat: 109 files changed, 3005 insertions(+), 5906 deletions(-) Removing almost 3K lines of code is a good thing. Other advantages include: 1. Value::getType() is a simple load that can be CSE'd, not a mutating union-find operation. 2. Types a uniqued and never move once created, defining away PATypeHolder. 3. Structs can be "named" now, and their name is part of the identity that uniques them. This means that the compiler doesn't merge them structurally which makes the IR much less confusing. 4. Now that there is no way to get a cycle in a type graph without a named struct type, "upreferences" go away. 5. Type refinement is completely gone, which should make LTO much MUCH faster in some common cases with C++ code. 6. Types are now generally immutable, so we can use "Type *" instead "const Type *" everywhere. Downsides of this patch are that it removes some functions from the C API, so people using those will have to upgrade to (not yet added) new API. "LLVM 3.0" is the right time to do this. There are still some cleanups pending after this, this patch is large enough as-is. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134829 91177308-0d34-0410-b5e6-96231b3b80d8
207 lines
3.7 KiB
LLVM
207 lines
3.7 KiB
LLVM
; RUN: opt < %s -ipsccp -S | FileCheck %s
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;;======================== test1
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define internal i32 @test1a(i32 %A) {
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%X = add i32 1, 2
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ret i32 %A
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}
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; CHECK: define internal i32 @test1a
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; CHECK: ret i32 undef
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define i32 @test1b() {
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%X = call i32 @test1a( i32 17 )
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ret i32 %X
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; CHECK: define i32 @test1b
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; CHECK: ret i32 17
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}
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;;======================== test2
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define internal i32 @test2a(i32 %A) {
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%C = icmp eq i32 %A, 0
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br i1 %C, label %T, label %F
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T:
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%B = call i32 @test2a( i32 0 )
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ret i32 0
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F:
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%C.upgrd.1 = call i32 @test2a(i32 1)
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ret i32 %C.upgrd.1
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}
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; CHECK: define internal i32 @test2a
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; CHECK-NEXT: br label %T
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; CHECK: ret i32 undef
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define i32 @test2b() {
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%X = call i32 @test2a(i32 0)
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ret i32 %X
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}
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; CHECK: define i32 @test2b
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; CHECK-NEXT: %X = call i32 @test2a(i32 0)
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; CHECK-NEXT: ret i32 0
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;;======================== test3
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@G = internal global i32 undef
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define void @test3a() {
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%X = load i32* @G
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store i32 %X, i32* @G
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ret void
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}
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; CHECK: define void @test3a
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; CHECK-NEXT: ret void
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define i32 @test3b() {
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%V = load i32* @G
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%C = icmp eq i32 %V, 17
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br i1 %C, label %T, label %F
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T:
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store i32 17, i32* @G
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ret i32 %V
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F:
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store i32 123, i32* @G
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ret i32 0
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}
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; CHECK: define i32 @test3b
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; CHECK-NOT: store
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; CHECK: ret i32 0
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;;======================== test4
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define internal {i64,i64} @test4a() {
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%a = insertvalue {i64,i64} undef, i64 4, 1
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%b = insertvalue {i64,i64} %a, i64 5, 0
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ret {i64,i64} %b
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}
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define i64 @test4b() {
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%a = invoke {i64,i64} @test4a()
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to label %A unwind label %B
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A:
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%b = extractvalue {i64,i64} %a, 0
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%c = call i64 @test4c(i64 %b)
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ret i64 %c
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B:
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ret i64 0
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}
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; CHECK: define i64 @test4b()
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; CHECK: %c = call i64 @test4c(i64 5)
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; CHECK-NEXT: ret i64 5
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define internal i64 @test4c(i64 %a) {
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ret i64 %a
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}
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; CHECK: define internal i64 @test4c
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; CHECK: ret i64 undef
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;;======================== test5
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; PR4313
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define internal {i64,i64} @test5a() {
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%a = insertvalue {i64,i64} undef, i64 4, 1
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%b = insertvalue {i64,i64} %a, i64 5, 0
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ret {i64,i64} %b
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}
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define i64 @test5b() {
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%a = invoke {i64,i64} @test5a()
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to label %A unwind label %B
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A:
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%c = call i64 @test5c({i64,i64} %a)
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ret i64 %c
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B:
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ret i64 0
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}
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; CHECK: define i64 @test5b()
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; CHECK: A:
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; CHECK-NEXT: %c = call i64 @test5c({ i64, i64 } %a)
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; CHECK-NEXT: ret i64 5
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define internal i64 @test5c({i64,i64} %a) {
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%b = extractvalue {i64,i64} %a, 0
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ret i64 %b
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}
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;;======================== test6
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define i64 @test6a() {
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ret i64 0
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}
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define i64 @test6b() {
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%a = call i64 @test6a()
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ret i64 %a
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}
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; CHECK: define i64 @test6b
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; CHECK: ret i64 0
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;;======================== test7
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%T = type {i32,i32}
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define internal %T @test7a(i32 %A) {
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%X = add i32 1, %A
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%mrv0 = insertvalue %T undef, i32 %X, 0
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%mrv1 = insertvalue %T %mrv0, i32 %A, 1
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ret %T %mrv1
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; CHECK: @test7a
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; CHECK-NEXT: %mrv0 = insertvalue %T undef, i32 18, 0
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; CHECK-NEXT: %mrv1 = insertvalue %T %mrv0, i32 17, 1
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}
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define i32 @test7b() {
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%X = call %T @test7a(i32 17)
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%Y = extractvalue %T %X, 0
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%Z = add i32 %Y, %Y
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ret i32 %Z
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; CHECK: define i32 @test7b
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; CHECK-NEXT: call %T @test7a(i32 17)
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; CHECK-NEXT: ret i32 36
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}
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;;======================== test8
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define internal {} @test8a(i32 %A, i32* %P) {
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store i32 %A, i32* %P
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ret {} {}
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; CHECK: @test8a
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; CHECK-NEXT: store i32 5,
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; CHECK-NEXT: ret
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}
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define void @test8b(i32* %P) {
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%X = call {} @test8a(i32 5, i32* %P)
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ret void
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; CHECK: define void @test8b
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; CHECK-NEXT: call {} @test8a
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; CHECK-NEXT: ret void
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}
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;;======================== test9
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@test9g = internal global { } zeroinitializer
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define void @test9() {
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entry:
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%local_foo = alloca { }
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load { }* @test9g
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store { } %0, { }* %local_foo
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ret void
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}
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