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https://github.com/RPCS3/llvm-mirror.git
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0995eaf1ca
Use DL & ABI information for better alignment deduction, e.g., if a type is accessed and the ABI specifies an alignment requirement for such an access we can use it. This is based on a patch by @lebedev.ri and inspired by getBaseAlign in Loads.cpp. Depends on D76673. Reviewed By: lebedev.ri Differential Revision: https://reviews.llvm.org/D76674
210 lines
6.9 KiB
LLVM
210 lines
6.9 KiB
LLVM
; RUN: opt < %s -attributor -attributor-disable=false -S -attributor-annotate-decl-cs | FileCheck %s --check-prefixes=ATTRIBUTOR
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; RUN: opt < %s -aa-pipeline=basic-aa -passes='attributor' -attributor-disable=false -S -attributor-annotate-decl-cs | FileCheck %s --check-prefixes=ATTRIBUTOR
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; Copied from Transforms/FunctionAttrs/readattrs.ll
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@x = global i32 0
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declare void @test1_1(i8* %x1_1, i8* readonly %y1_1, ...)
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; NOTE: readonly for %y1_2 would be OK here but not for the similar situation in test13.
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;
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; ATTRIBUTOR: define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2)
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define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2) {
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call void (i8*, i8*, ...) @test1_1(i8* %x1_2, i8* %y1_2, i8* %z1_2)
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store i32 0, i32* @x
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ret void
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}
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; ATTRIBUTOR: define i8* @test2(i8* nofree readnone returned %p)
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define i8* @test2(i8* %p) {
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store i32 0, i32* @x
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ret i8* %p
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}
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; ATTRIBUTOR: define i1 @test3(i8* nofree readnone %p, i8* nofree readnone %q)
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define i1 @test3(i8* %p, i8* %q) {
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%A = icmp ult i8* %p, %q
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ret i1 %A
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}
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declare void @test4_1(i8* nocapture) readonly
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; ATTRIBUTOR: define void @test4_2(i8* nocapture readonly %p)
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define void @test4_2(i8* %p) {
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call void @test4_1(i8* %p)
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ret void
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}
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; ATTRIBUTOR: define void @test5(i8** nocapture nofree nonnull writeonly align 8 dereferenceable(8) %p, i8* nofree writeonly %q)
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; Missed optz'n: we could make %q readnone, but don't break test6!
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define void @test5(i8** %p, i8* %q) {
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store i8* %q, i8** %p
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ret void
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}
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declare void @test6_1()
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; ATTRIBUTOR: define void @test6_2(i8** nocapture nonnull writeonly align 8 dereferenceable(8) %p, i8* %q)
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; This is not a missed optz'n.
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define void @test6_2(i8** %p, i8* %q) {
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store i8* %q, i8** %p
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call void @test6_1()
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ret void
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}
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; ATTRIBUTOR: define void @test7_1(i32* inalloca nocapture nofree writeonly %a)
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; inalloca parameters are always considered written
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define void @test7_1(i32* inalloca %a) {
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ret void
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}
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; ATTRIBUTOR: define i32* @test8_1(i32* nofree readnone returned %p)
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define i32* @test8_1(i32* %p) {
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entry:
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ret i32* %p
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}
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; ATTRIBUTOR: define void @test8_2(i32* nocapture nofree writeonly %p)
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define void @test8_2(i32* %p) {
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entry:
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%call = call i32* @test8_1(i32* %p)
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store i32 10, i32* %call, align 4
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ret void
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}
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; ATTRIBUTOR: declare void @llvm.masked.scatter
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declare void @llvm.masked.scatter.v4i32.v4p0i32(<4 x i32>%val, <4 x i32*>, i32, <4 x i1>)
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; ATTRIBUTOR-NOT: readnone
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; ATTRIBUTOR-NOT: readonly
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; ATTRIBUTOR: define void @test9
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define void @test9(<4 x i32*> %ptrs, <4 x i32>%val) {
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call void @llvm.masked.scatter.v4i32.v4p0i32(<4 x i32>%val, <4 x i32*> %ptrs, i32 4, <4 x i1><i1 true, i1 false, i1 true, i1 false>)
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ret void
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}
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; ATTRIBUTOR: declare <4 x i32> @llvm.masked.gather
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declare <4 x i32> @llvm.masked.gather.v4i32.v4p0i32(<4 x i32*>, i32, <4 x i1>, <4 x i32>)
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; ATTRIBUTOR: readonly
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; ATTRIBUTOR: define <4 x i32> @test10
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define <4 x i32> @test10(<4 x i32*> %ptrs) {
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%res = call <4 x i32> @llvm.masked.gather.v4i32.v4p0i32(<4 x i32*> %ptrs, i32 4, <4 x i1><i1 true, i1 false, i1 true, i1 false>, <4 x i32>undef)
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ret <4 x i32> %res
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}
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; ATTRIBUTOR: declare <4 x i32> @test11_1
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declare <4 x i32> @test11_1(<4 x i32*>) argmemonly nounwind readonly
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; ATTRIBUTOR: readonly
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; ATTRIBUTOR-NOT: readnone
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; ATTRIBUTOR: define <4 x i32> @test11_2
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define <4 x i32> @test11_2(<4 x i32*> %ptrs) {
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%res = call <4 x i32> @test11_1(<4 x i32*> %ptrs)
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ret <4 x i32> %res
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}
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declare <4 x i32> @test12_1(<4 x i32*>) argmemonly nounwind
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; ATTRIBUTOR-NOT: readnone
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; ATTRIBUTOR: define <4 x i32> @test12_2
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define <4 x i32> @test12_2(<4 x i32*> %ptrs) {
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%res = call <4 x i32> @test12_1(<4 x i32*> %ptrs)
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ret <4 x i32> %res
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}
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; ATTRIBUTOR: define i32 @volatile_load(
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; ATTRIBUTOR-NOT: readonly
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; ATTRIBUTOR: ret
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define i32 @volatile_load(i32* %p) {
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%load = load volatile i32, i32* %p
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ret i32 %load
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}
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declare void @escape_readnone_ptr(i8** %addr, i8* readnone %ptr)
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declare void @escape_readonly_ptr(i8** %addr, i8* readonly %ptr)
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; The argument pointer %escaped_then_written cannot be marked readnone/only even
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; though the only direct use, in @escape_readnone_ptr/@escape_readonly_ptr,
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; is marked as readnone/only. However, the functions can write the pointer into
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; %addr, causing the store to write to %escaped_then_written.
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;
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;
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; ATTRIBUTOR: define void @unsound_readnone(i8* nocapture nofree readnone %ignored, i8* %escaped_then_written)
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; ATTRIBUTOR: define void @unsound_readonly(i8* nocapture nofree readnone %ignored, i8* %escaped_then_written)
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define void @unsound_readnone(i8* %ignored, i8* %escaped_then_written) {
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%addr = alloca i8*
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call void @escape_readnone_ptr(i8** %addr, i8* %escaped_then_written)
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%addr.ld = load i8*, i8** %addr
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store i8 0, i8* %addr.ld
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ret void
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}
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define void @unsound_readonly(i8* %ignored, i8* %escaped_then_written) {
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%addr = alloca i8*
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call void @escape_readonly_ptr(i8** %addr, i8* %escaped_then_written)
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%addr.ld = load i8*, i8** %addr
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store i8 0, i8* %addr.ld
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ret void
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}
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; Byval but not readonly/none tests
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;
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;{
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declare void @escape_i8(i8* %ptr)
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; ATTRIBUTOR: @byval_not_readonly_1
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; ATTRIBUTOR-SAME: i8* noalias byval %written
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define void @byval_not_readonly_1(i8* byval %written) readonly {
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call void @escape_i8(i8* %written)
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ret void
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}
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; ATTRIBUTOR: @byval_not_readonly_2
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; ATTRIBUTOR-SAME: i8* noalias nocapture nofree nonnull writeonly byval dereferenceable(1) %written
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define void @byval_not_readonly_2(i8* byval %written) readonly {
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store i8 0, i8* %written
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ret void
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}
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; ATTRIBUTOR: @byval_not_readnone_1
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; ATTRIBUTOR-SAME: i8* noalias byval %written
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define void @byval_not_readnone_1(i8* byval %written) readnone {
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call void @escape_i8(i8* %written)
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ret void
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}
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; ATTRIBUTOR: @byval_not_readnone_2
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; ATTRIBUTOR-SAME: i8* noalias nocapture nofree nonnull writeonly byval dereferenceable(1) %written
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define void @byval_not_readnone_2(i8* byval %written) readnone {
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store i8 0, i8* %written
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ret void
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}
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; ATTRIBUTOR: @byval_no_fnarg
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; ATTRIBUTOR-SAME: i8* noalias nocapture nofree nonnull writeonly byval dereferenceable(1) %written
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define void @byval_no_fnarg(i8* byval %written) {
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store i8 0, i8* %written
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ret void
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}
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; ATTRIBUTOR: @testbyval
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; ATTRIBUTOR-SAME: i8* nocapture readonly %read_only
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define void @testbyval(i8* %read_only) {
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call void @byval_not_readonly_1(i8* %read_only)
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call void @byval_not_readonly_2(i8* %read_only)
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call void @byval_not_readnone_1(i8* %read_only)
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call void @byval_not_readnone_2(i8* %read_only)
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call void @byval_no_fnarg(i8* %read_only)
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ret void
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}
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;}
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declare i8* @maybe_returned_ptr(i8* readonly %ptr) readonly nounwind
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declare i8 @maybe_returned_val(i8* %ptr) readonly nounwind
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declare void @val_use(i8 %ptr) readonly nounwind
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define void @ptr_uses(i8* %ptr) {
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; ATTRIBUTOR: define void @ptr_uses(i8* nocapture readonly %ptr)
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%call_ptr = call i8* @maybe_returned_ptr(i8* %ptr)
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%call_val = call i8 @maybe_returned_val(i8* %call_ptr)
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call void @val_use(i8 %call_val)
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ret void
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}
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