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| ; RUN: opt < %s -ipconstprop -S > %t
; RUN: cat %t | grep "store i32 %Z, i32\* %Q"
; RUN: cat %t | grep "add i32 1, 3"
;; This function returns its second argument on all return statements
define internal i32* @incdec(i1 %C, i32* %V) {
%X = load i32, i32* %V
br i1 %C, label %T, label %F
T: ; preds = %0
%X1 = add i32 %X, 1
store i32 %X1, i32* %V
ret i32* %V
F: ; preds = %0
%X2 = sub i32 %X, 1
store i32 %X2, i32* %V
ret i32* %V
}
;; This function returns its first argument as a part of a multiple return
;; value
define internal { i32, i32 } @foo(i32 %A, i32 %B) {
%X = add i32 %A, %B
%Y = insertvalue { i32, i32 } undef, i32 %A, 0
%Z = insertvalue { i32, i32 } %Y, i32 %X, 1
ret { i32, i32 } %Z
}
define void @caller(i1 %C) personality i32 (...)* @__gxx_personality_v0 {
%Q = alloca i32
;; Call incdec to see if %W is properly replaced by %Q
%W = call i32* @incdec(i1 %C, i32* %Q ) ; <i32> [#uses=1]
;; Call @foo twice, to prevent the arguments from propagating into the
;; function (so we can check the returned argument is properly
;; propagated per-caller).
%S1 = call { i32, i32 } @foo(i32 1, i32 2)
%X1 = extractvalue { i32, i32 } %S1, 0
%S2 = invoke { i32, i32 } @foo(i32 3, i32 4) to label %OK unwind label %LPAD
OK:
%X2 = extractvalue { i32, i32 } %S2, 0
;; Do some stuff with the returned values which we can grep for
%Z = add i32 %X1, %X2
store i32 %Z, i32* %W
br label %RET
LPAD:
%exn = landingpad {i8*, i32}
cleanup
br label %RET
RET:
ret void
}
declare i32 @__gxx_personality_v0(...)
|