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30 lines
1.1 KiB
30 lines
1.1 KiB
4 months ago
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; This test checks to make sure that constant exprs fold in some simple situations
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; RUN: llvm-as < %s | llvm-dis | FileCheck %s
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; RUN: verify-uselistorder %s
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; CHECK-NOT: bitcast
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; CHECK-NOT: trunc
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; CHECK: addrspacecast
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; CHECK: addrspacecast
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@A = global i32* bitcast (i8* null to i32*) ; Cast null -> fold
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@B = global i32** bitcast (i32** @A to i32**) ; Cast to same type -> fold
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@C = global i32 trunc (i64 42 to i32) ; Integral casts
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@D = global i32* bitcast(float* bitcast (i32* @C to float*) to i32*) ; cast of cast ptr->ptr
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@E = global i32 ptrtoint(float* inttoptr (i8 5 to float*) to i32) ; i32 -> ptr -> i32
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; Test folding of binary instrs
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@F = global i32* inttoptr (i32 add (i32 5, i32 -5) to i32*)
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@G = global i32* inttoptr (i32 sub (i32 5, i32 5) to i32*)
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; Address space cast AS0 null-> AS1 null
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@H = global i32 addrspace(1)* addrspacecast(i32* null to i32 addrspace(1)*)
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; Address space cast AS1 null-> AS0 null
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@I = global i32* addrspacecast(i32 addrspace(1)* null to i32*)
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; Bitcast -> GEP
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@J = external global { i32 }
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@K = global i32* bitcast ({ i32 }* @J to i32*)
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