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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep extractvalue
; Instcombine should fold various combinations of insertvalue and extractvalue
; together
declare void @bar({i32, i32} %a)
define i32 @foo() {
; Build a simple struct and pull values out again
%s1.1 = insertvalue {i32, i32} undef, i32 0, 0
%s1 = insertvalue {i32, i32} %s1.1, i32 1, 1
%v1 = extractvalue {i32, i32} %s1, 0
%v2 = extractvalue {i32, i32} %s1, 1
; Build a nested struct and pull a sub struct out of it
; This requires instcombine to insert a few insertvalue instructions
%ns1.1 = insertvalue {i32, {i32, i32}} undef, i32 %v1, 0
%ns1.2 = insertvalue {i32, {i32, i32}} %ns1.1, i32 %v1, 1, 0
%ns1 = insertvalue {i32, {i32, i32}} %ns1.2, i32 %v2, 1, 1
%s2 = extractvalue {i32, {i32, i32}} %ns1, 1
%v3 = extractvalue {i32, {i32, i32}} %ns1, 1, 1
call void @bar({i32, i32} %s2)
; Use nested extractvalues to get to a value
%s3 = extractvalue {i32, {i32, i32}} %ns1, 1
%v4 = extractvalue {i32, i32} %s3, 1
call void @bar({i32, i32} %s3)
; Use nested insertvalues to build a nested struct
%s4.1 = insertvalue {i32, i32} undef, i32 %v3, 0
%s4 = insertvalue {i32, i32} %s4.1, i32 %v4, 1
%ns2 = insertvalue {i32, {i32, i32}} undef, {i32, i32} %s4, 1
; And now extract a single value from there
%v5 = extractvalue {i32, {i32, i32}} %ns2, 1, 1
ret i32 %v5
}
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