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; This test shows an alloca of a struct and an array that can be reduced to
; multiple variables easily. However, the alloca is used by a store
; instruction, which was not possible before aggregrates were first class
; values. This checks of scalarrepl splits up the struct and array properly.
; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | not grep alloca
define i32 @foo() {
%target = alloca { i32, i32 } ; <{ i32, i32 }*> [#uses=1]
; Build a first class struct to store
%res1 = insertvalue { i32, i32 } undef, i32 1, 0 ; <{ i32, i32 }> [#uses=1]
%res2 = insertvalue { i32, i32 } %res1, i32 2, 1 ; <{ i32, i32 }> [#uses=1]
; And store it
store { i32, i32 } %res2, { i32, i32 }* %target
; Actually use %target, so it doesn't get removed alltogether
%ptr = getelementptr { i32, i32 }* %target, i32 0, i32 0
%val = load i32* %ptr
ret i32 %val
}
define i32 @bar() {
%target = alloca [ 2 x i32 ] ; <{ i32, i32 }*> [#uses=1]
; Build a first class array to store
%res1 = insertvalue [ 2 x i32 ] undef, i32 1, 0 ; <{ i32, i32 }> [#uses=1]
%res2 = insertvalue [ 2 x i32 ] %res1, i32 2, 1 ; <{ i32, i32 }> [#uses=1]
; And store it
store [ 2 x i32 ] %res2, [ 2 x i32 ]* %target
; Actually use %target, so it doesn't get removed alltogether
%ptr = getelementptr [ 2 x i32 ]* %target, i32 0, i32 0
%val = load i32* %ptr
ret i32 %val
}
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