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; This test makes sure that these instructions are properly eliminated.
;
; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | not grep load
%X = constant int 42
%X2 = constant int 47
%Y = constant [2 x { int, float }] [ { int, float } { int 12, float 1.0 },
{ int, float } { int 37, float 0x3FF3B2FEC0000000 } ]
%Z = constant [2 x { int, float }] zeroinitializer
int %test1() {
%B = load int* %X
ret int %B
}
float %test2() {
%A = getelementptr [2 x { int, float}]* %Y, long 0, long 1, uint 1
%B = load float* %A
ret float %B
}
int %test3() {
%A = getelementptr [2 x { int, float}]* %Y, long 0, long 0, uint 0
%B = load int* %A
ret int %B
}
int %test4() {
%A = getelementptr [2 x { int, float}]* %Z, long 0, long 1, uint 0
%B = load int* %A
ret int %B
}
; load (select (Cond, &V1, &V2)) --> select(Cond, load &V1, load &V2)
int %test5(bool %C) {
%Y = select bool %C, int* %X, int* %X2
%Z = load int* %Y
ret int %Z
}
int %test7(int %X) {
%V = getelementptr int* null, int %X
%R = load int* %V
ret int %R
}
int %test8(int* %P) {
store int 1, int* %P
%X = load int* %P ;; Trivial store->load forwarding
ret int %X
}
int %test9(int* %P) {
%X = load int* %P ;; Trivial load cse
%Y = load int* %P
%Z = sub int %X, %Y
ret int %Z
}
int %test10(bool %C, int* %P, int* %Q) {
br bool %C, label %T, label %F
T:
store int 1, int* %Q
store int 0, int* %P
br label %C
F:
store int 0, int* %P
br label %C
C:
%V = load int* %P ;; always 0
ret int %V
}
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