mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-30 02:32:08 +00:00
10603e0c84
get away with it, which exposes opportunities to eliminate the memory
objects entirely. For example, we now compile byval.ll to:
define internal void @f1(i32 %b.0, i64 %b.1) {
entry:
%tmp2 = add i32 %b.0, 1 ; <i32> [#uses=0]
ret void
}
define i32 @main() nounwind {
entry:
call void @f1( i32 1, i64 2 )
ret i32 0
}
This seems like it would trigger a lot for code that passes around small
structs (e.g. SDOperand's or _Complex)...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45886 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
843 B
LLVM
25 lines
843 B
LLVM
; RUN: llvm-as < %s | opt -argpromotion -scalarrepl | llvm-dis | not grep load
|
|
; Argpromote + scalarrepl should change this to passing the two integers by value.
|
|
|
|
%struct.ss = type { i32, i64 }
|
|
|
|
define internal void @f(%struct.ss* byval %b) nounwind {
|
|
entry:
|
|
%tmp = getelementptr %struct.ss* %b, i32 0, i32 0 ; <i32*> [#uses=2]
|
|
%tmp1 = load i32* %tmp, align 4 ; <i32> [#uses=1]
|
|
%tmp2 = add i32 %tmp1, 1 ; <i32> [#uses=1]
|
|
store i32 %tmp2, i32* %tmp, align 4
|
|
ret void
|
|
}
|
|
|
|
define i32 @main() nounwind {
|
|
entry:
|
|
%S = alloca %struct.ss ; <%struct.ss*> [#uses=4]
|
|
%tmp1 = getelementptr %struct.ss* %S, i32 0, i32 0 ; <i32*> [#uses=1]
|
|
store i32 1, i32* %tmp1, align 8
|
|
%tmp4 = getelementptr %struct.ss* %S, i32 0, i32 1 ; <i64*> [#uses=1]
|
|
store i64 2, i64* %tmp4, align 4
|
|
call void @f( %struct.ss* byval %S ) nounwind
|
|
ret i32 0
|
|
}
|