copy-aggregate.ll   [plain text]

; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | not grep alloca
; PR3290

;; Store of integer to whole alloca struct.
define i32 @test1(i64 %V) nounwind {
	%X = alloca {{i32, i32}}
	%Y = bitcast {{i32,i32}}* %X to i64*
	store i64 %V, i64* %Y

	%A = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 0
	%B = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 1
	%a = load i32* %A
	%b = load i32* %B
	%c = add i32 %a, %b
	ret i32 %c
}

;; Store of integer to whole struct/array alloca.
define float @test2(i128 %V) nounwind {
	%X = alloca {[4 x float]}
	%Y = bitcast {[4 x float]}* %X to i128*
	store i128 %V, i128* %Y

	%A = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 0
	%B = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 3
	%a = load float* %A
	%b = load float* %B
	%c = add float %a, %b
	ret float %c
}

;; Load of whole alloca struct as integer
define i64 @test3(i32 %a, i32 %b) nounwind {
	%X = alloca {{i32, i32}}

	%A = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 0
	%B = getelementptr {{i32,i32}}* %X, i32 0, i32 0, i32 1
        store i32 %a, i32* %A
        store i32 %b, i32* %B

	%Y = bitcast {{i32,i32}}* %X to i64*
        %Z = load i64* %Y
	ret i64 %Z
}

;; load of integer from whole struct/array alloca.
define i128 @test4(float %a, float %b) nounwind {
	%X = alloca {[4 x float]}
	%A = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 0
	%B = getelementptr {[4 x float]}* %X, i32 0, i32 0, i32 3
	store float %a, float* %A
	store float %b, float* %B
        
      	%Y = bitcast {[4 x float]}* %X to i128*
	%V = load i128* %Y
	ret i128 %V
}