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