57d57b1afd
With opaque pointers, we cannot use the pointer element type to determine the LocationSize for the AA query. Instead, -aa-eval tests are now required to have an explicit load or store for any pointer they want to compute alias results for, and the load/store types are used to determine the location size. This may affect ordering of results, and sorting within one result, as the type is not considered part of the sorted string anymore. To somewhat minimize the churn, printing still uses faux typed pointer notation.
70 lines
2.5 KiB
LLVM
70 lines
2.5 KiB
LLVM
; This testcase consists of alias relations on 128-bit pointers that
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; should be completely resolvable by basicaa.
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; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-no-aliases -print-may-aliases -print-must-aliases -disable-output 2>&1 | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-i128:128:128-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128-p100:128:64:64-p101:128:64:64"
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; test0 is similar to SimpleCases.ll
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%T = type { i32, [10 x i8] }
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; CHECK: Function: test0
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; CHECK-NOT: MayAlias:
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define void @test0(%T addrspace(100)* %P) {
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%A = getelementptr %T, %T addrspace(100)* %P, i64 0
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%B = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 0
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%C = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 1
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%D = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 1, i64 0
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%E = getelementptr %T, %T addrspace(100)* %P, i64 0, i32 1, i64 5
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load %T, %T addrspace(100)* %A
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load i32, i32 addrspace(100)* %B
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load [10 x i8], [10 x i8] addrspace(100)* %C
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load i8, i8 addrspace(100)* %D
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load i8, i8 addrspace(100)* %E
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ret void
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}
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; test1 checks that >64 bits of index can be considered.
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; If BasicAA is truncating the arithmetic, it will conclude
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; that %A and %B must alias when in fact they must not.
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; CHECK: Function: test1
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; CHECK-NOT: MustAlias:
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; CHECK: NoAlias:
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; CHECK-SAME: %A
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; CHECK-SAME: %B
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define void @test1(double addrspace(100)* %P, i128 %i) {
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; 1180591620717411303424 is 2**70
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; 590295810358705651712 is 2**69
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%i70 = add i128 %i, 1180591620717411303424
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%i69 = add i128 %i, 590295810358705651712
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%A = getelementptr double, double addrspace(100)* %P, i128 %i70
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%B = getelementptr double, double addrspace(100)* %P, i128 %i69
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load double, double addrspace(100)* %A
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load double, double addrspace(100)* %B
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ret void
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}
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; test2 checks that >64 bits of index can be considered
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; and computes the same address in two ways to ensure that
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; they are considered equivalent.
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; CHECK: Function: test2
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; CHECK: MustAlias:
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; CHECK-SAME: %A
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; CHECK-SAME: %C
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define void @test2(double addrspace(100)* %P, i128 %i) {
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; 1180591620717411303424 is 2**70
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; 590295810358705651712 is 2**69
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%i70 = add i128 %i, 1180591620717411303424
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%i69 = add i128 %i, 590295810358705651712
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%j70 = add i128 %i69, 590295810358705651712
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%A = getelementptr double, double addrspace(100)* %P, i128 %i70
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%C = getelementptr double, double addrspace(100)* %P, i128 %j70
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load double, double addrspace(100)* %A
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load double, double addrspace(100)* %C
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ret void
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}
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