; This test makes sure that these instructions are properly eliminated. ; ; RUN: opt < %s -instcombine -S | not grep load @X = constant i32 42 ; [#uses=2] @X2 = constant i32 47 ; [#uses=1] @Y = constant [2 x { i32, float }] [ { i32, float } { i32 12, float 1.000000e+00 }, { i32, float } { i32 37, float 0x3FF3B2FEC0000000 } ] ; <[2 x { i32, float }]*> [#uses=2] @Z = constant [2 x { i32, float }] zeroinitializer ; <[2 x { i32, float }]*> [#uses=1] @GLOBAL = internal constant [4 x i32] zeroinitializer define i32 @test1() { %B = load i32* @X ; [#uses=1] ret i32 %B } define float @test2() { %A = getelementptr [2 x { i32, float }]* @Y, i64 0, i64 1, i32 1 ; [#uses=1] %B = load float* %A ; [#uses=1] ret float %B } define i32 @test3() { %A = getelementptr [2 x { i32, float }]* @Y, i64 0, i64 0, i32 0 ; [#uses=1] %B = load i32* %A ; [#uses=1] ret i32 %B } define i32 @test4() { %A = getelementptr [2 x { i32, float }]* @Z, i64 0, i64 1, i32 0 ; [#uses=1] %B = load i32* %A ; [#uses=1] ret i32 %B } define i32 @test5(i1 %C) { %Y = select i1 %C, i32* @X, i32* @X2 ; [#uses=1] %Z = load i32* %Y ; [#uses=1] ret i32 %Z } define i32 @test7(i32 %X) { %V = getelementptr i32* null, i32 %X ; [#uses=1] %R = load i32* %V ; [#uses=1] ret i32 %R } define i32 @test8(i32* %P) { store i32 1, i32* %P %X = load i32* %P ; [#uses=1] ret i32 %X } define i32 @test9(i32* %P) { %X = load i32* %P ; [#uses=1] %Y = load i32* %P ; [#uses=1] %Z = sub i32 %X, %Y ; [#uses=1] ret i32 %Z } define i32 @test10(i1 %C.upgrd.1, i32* %P, i32* %Q) { br i1 %C.upgrd.1, label %T, label %F T: ; preds = %0 store i32 1, i32* %Q store i32 0, i32* %P br label %C F: ; preds = %0 store i32 0, i32* %P br label %C C: ; preds = %F, %T %V = load i32* %P ; [#uses=1] ret i32 %V } define double @test11(double* %p) { %t0 = getelementptr double* %p, i32 1 store double 2.0, double* %t0 %t1 = getelementptr double* %p, i32 1 %x = load double* %t1 ret double %x } define i32 @test12(i32* %P) { %A = alloca i32 store i32 123, i32* %A ; Cast the result of the load not the source %Q = bitcast i32* %A to i32* %V = load i32* %Q ret i32 %V } define <16 x i8> @test13(<2 x i64> %x) { entry: %tmp = load <16 x i8> * bitcast ([4 x i32]* @GLOBAL to <16 x i8>*) ret <16 x i8> %tmp }