forked from OSchip/llvm-project
196 lines
6.4 KiB
LLVM
196 lines
6.4 KiB
LLVM
; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; CHECK: Function: t1
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @t1([8 x i32]* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add nsw nuw i32 %addend, %knownnonzero
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%gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 2, i32 %addend
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%gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 2, i32 %add
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t2
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t2([8 x i32]* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add nsw nuw i32 %addend, %knownnonzero
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%gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 1, i32 %addend
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%gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 0, i32 %add
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t3
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; CHECK: MustAlias: i32* %gep1, i32* %gep2
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define void @t3([8 x i32]* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add nsw nuw i32 %addend, %knownnonzero
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%gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 0, i32 %add
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%gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 0, i32 %add
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t4
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; CHECK: MayAlias: i32* %gep1, i32* %gep2
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define void @t4([8 x i32]* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add nsw nuw i32 %addend, %knownnonzero
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%gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 1, i32 %addend
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%gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 %add, i32 %add
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK: Function: t5
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; CHECK: MayAlias: i64* %bc, i32* %gep2
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define void @t5([8 x i32]* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add nsw nuw i32 %addend, %knownnonzero
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%gep1 = getelementptr [8 x i32], [8 x i32]* %p, i32 2, i32 %addend
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%gep2 = getelementptr [8 x i32], [8 x i32]* %p, i32 2, i32 %add
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%bc = bitcast i32* %gep1 to i64*
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load i32, i32* %gep2
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load i64, i64* %bc
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ret void
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}
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; CHECK-LABEL: Function: add_non_zero_simple
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @add_non_zero_simple(i32* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add i32 %addend, %knownnonzero
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%gep1 = getelementptr i32, i32* %p, i32 %addend
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%gep2 = getelementptr i32, i32* %p, i32 %add
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: Function: add_non_zero_different_scales
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; CHECK: MayAlias: i32* %gep1, i16* %gep2
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define void @add_non_zero_different_scales(i32* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add i32 %addend, %knownnonzero
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%p16 = bitcast i32* %p to i16*
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%gep1 = getelementptr i32, i32* %p, i32 %addend
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%gep2 = getelementptr i16, i16* %p16, i32 %add
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load i32, i32* %gep1
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load i16, i16* %gep2
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ret void
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}
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; CHECK-LABEL: Function: add_non_zero_different_sizes
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; CHECK: NoAlias: i16* %gep1.16, i32* %gep2
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; CHECK: NoAlias: i32* %gep1, i16* %gep2.16
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; CHECK: NoAlias: i16* %gep1.16, i16* %gep2.16
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; CHECK: MayAlias: i64* %gep1.64, i32* %gep2
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; CHECK: MayAlias: i64* %gep1.64, i16* %gep2.16
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; CHECK: MayAlias: i32* %gep1, i64* %gep2.64
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; CHECK: MayAlias: i16* %gep1.16, i64* %gep2.64
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; CHECK: MayAlias: i64* %gep1.64, i64* %gep2.64
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define void @add_non_zero_different_sizes(i32* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add i32 %addend, %knownnonzero
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%gep1 = getelementptr i32, i32* %p, i32 %addend
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%gep2 = getelementptr i32, i32* %p, i32 %add
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%gep1.16 = bitcast i32* %gep1 to i16*
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%gep2.16 = bitcast i32* %gep2 to i16*
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%gep1.64 = bitcast i32* %gep1 to i64*
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%gep2.64 = bitcast i32* %gep2 to i64*
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load i32, i32* %gep1
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load i32, i32* %gep2
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load i16, i16* %gep1.16
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load i16, i16* %gep2.16
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load i64, i64* %gep1.64
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load i64, i64* %gep2.64
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ret void
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}
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; CHECK-LABEL: add_non_zero_with_offset
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; MayAlias: i32* %gep1, i32* %gep2
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; NoAlias: i16* %gep1.16, i16* %gep2.16
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define void @add_non_zero_with_offset(i32* %p, i32 %addend, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%add = add i32 %addend, %knownnonzero
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%p.8 = bitcast i32* %p to i8*
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%p.off.8 = getelementptr i8, i8* %p.8, i32 2
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%p.off = bitcast i8* %p.off.8 to i32*
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%gep1 = getelementptr i32, i32* %p.off, i32 %addend
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%gep2 = getelementptr i32, i32* %p, i32 %add
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%gep1.16 = bitcast i32* %gep1 to i16*
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%gep2.16 = bitcast i32* %gep2 to i16*
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load i32, i32* %gep1
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load i32, i32* %gep2
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load i16, i16* %gep1.16
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load i16, i16* %gep2.16
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ret void
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}
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; CHECK-LABEL: Function: add_non_zero_assume
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; CHECK: NoAlias: i32* %gep1, i32* %gep2
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define void @add_non_zero_assume(i32* %p, i32 %addend, i32 %knownnonzero) {
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%cmp = icmp ne i32 %knownnonzero, 0
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call void @llvm.assume(i1 %cmp)
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%add = add i32 %addend, %knownnonzero
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%gep1 = getelementptr i32, i32* %p, i32 %addend
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%gep2 = getelementptr i32, i32* %p, i32 %add
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load i32, i32* %gep1
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load i32, i32* %gep2
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ret void
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}
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; CHECK-LABEL: non_zero_index_simple
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; CHECK: NoAlias: i32* %gep, i32* %p
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; CHECK: NoAlias: i16* %gep.16, i32* %p
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; CHECK: MayAlias: i64* %gep.64, i32* %p
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define void @non_zero_index_simple(i32* %p, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%gep = getelementptr i32, i32* %p, i32 %knownnonzero
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%gep.16 = bitcast i32* %gep to i16*
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%gep.64 = bitcast i32* %gep to i64*
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load i32, i32* %p
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load i32, i32* %gep
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load i16, i16* %gep.16
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load i64, i64* %gep.64
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ret void
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}
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; CHECK-LABEL: non_zero_index_with_offset
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; CHECK: MayAlias: i32* %gep, i32* %p
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; CHECK: NoAlias: i16* %gep.16, i32* %p
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define void @non_zero_index_with_offset(i32* %p, i32* %q) {
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%knownnonzero = load i32, i32* %q, !range !0
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%p.8 = bitcast i32* %p to i8*
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%p.off.8 = getelementptr i8, i8* %p.8, i32 2
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%p.off = bitcast i8* %p.off.8 to i32*
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%gep = getelementptr i32, i32* %p.off, i32 %knownnonzero
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%gep.16 = bitcast i32* %gep to i16*
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load i32, i32* %p
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load i32, i32* %gep
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load i16, i16* %gep.16
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ret void
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}
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; CHECK-LABEL: non_zero_index_assume
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; CHECK: NoAlias: i32* %gep, i32* %p
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define void @non_zero_index_assume(i32* %p, i32 %knownnonzero) {
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%cmp = icmp ne i32 %knownnonzero, 0
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call void @llvm.assume(i1 %cmp)
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%gep = getelementptr i32, i32* %p, i32 %knownnonzero
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load i32, i32* %p
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load i32, i32* %gep
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ret void
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}
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declare void @llvm.assume(i1)
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!0 = !{ i32 1, i32 0 }
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