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llvm-project/llvm/test/Transforms/CorrelatedValuePropagation/non-null.ll

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Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -correlated-propagation -S | FileCheck %s
define void @test1(i8* %ptr) {
; CHECK-LABEL: @test1(
Infer alignment of unmarked loads in IR/bitcode parsing. For IR generated by a compiler, this is really simple: you just take the datalayout from the beginning of the file, and apply it to all the IR later in the file. For optimization testcases that don't care about the datalayout, this is also really simple: we just use the default datalayout. The complexity here comes from the fact that some LLVM tools allow overriding the datalayout: some tools have an explicit flag for this, some tools will infer a datalayout based on the code generation target. Supporting this properly required plumbing through a bunch of new machinery: we want to allow overriding the datalayout after the datalayout is parsed from the file, but before we use any information from it. Therefore, IR/bitcode parsing now has a callback to allow tools to compute the datalayout at the appropriate time. Not sure if I covered all the LLVM tools that want to use the callback. (clang? lli? Misc IR manipulation tools like llvm-link?). But this is at least enough for all the LLVM regression tests, and IR without a datalayout is not something frontends should generate. This change had some sort of weird effects for certain CodeGen regression tests: if the datalayout is overridden with a datalayout with a different program or stack address space, we now parse IR based on the overridden datalayout, instead of the one written in the file (or the default one, if none is specified). This broke a few AVR tests, and one AMDGPU test. Outside the CodeGen tests I mentioned, the test changes are all just fixing CHECK lines and moving around datalayout lines in weird places. Differential Revision: https://reviews.llvm.org/D78403
2020-05-15 03:59:45 +08:00
; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
%A = load i8, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test1_no_null_opt(i8* %ptr) #0 {
; CHECK-LABEL: @test1_no_null_opt(
Infer alignment of unmarked loads in IR/bitcode parsing. For IR generated by a compiler, this is really simple: you just take the datalayout from the beginning of the file, and apply it to all the IR later in the file. For optimization testcases that don't care about the datalayout, this is also really simple: we just use the default datalayout. The complexity here comes from the fact that some LLVM tools allow overriding the datalayout: some tools have an explicit flag for this, some tools will infer a datalayout based on the code generation target. Supporting this properly required plumbing through a bunch of new machinery: we want to allow overriding the datalayout after the datalayout is parsed from the file, but before we use any information from it. Therefore, IR/bitcode parsing now has a callback to allow tools to compute the datalayout at the appropriate time. Not sure if I covered all the LLVM tools that want to use the callback. (clang? lli? Misc IR manipulation tools like llvm-link?). But this is at least enough for all the LLVM regression tests, and IR without a datalayout is not something frontends should generate. This change had some sort of weird effects for certain CodeGen regression tests: if the datalayout is overridden with a datalayout with a different program or stack address space, we now parse IR based on the overridden datalayout, instead of the one written in the file (or the default one, if none is specified). This broke a few AVR tests, and one AMDGPU test. Outside the CodeGen tests I mentioned, the test changes are all just fixing CHECK lines and moving around datalayout lines in weird places. Differential Revision: https://reviews.llvm.org/D78403
2020-05-15 03:59:45 +08:00
; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null
; CHECK-NEXT: ret void
;
%A = load i8, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test2(i8* %ptr) {
; CHECK-LABEL: @test2(
StoreInst should store Align, not MaybeAlign This is D77454, except for stores. All the infrastructure work was done for loads, so the remaining changes necessary are relatively small. Differential Revision: https://reviews.llvm.org/D79968
2020-05-15 05:48:10 +08:00
; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
store i8 0, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test2_no_null_opt(i8* %ptr) #0 {
; CHECK-LABEL: @test2_no_null_opt(
StoreInst should store Align, not MaybeAlign This is D77454, except for stores. All the infrastructure work was done for loads, so the remaining changes necessary are relatively small. Differential Revision: https://reviews.llvm.org/D79968
2020-05-15 05:48:10 +08:00
; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null
; CHECK-NEXT: ret void
;
store i8 0, i8* %ptr
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
define void @test3() {
; CHECK-LABEL: @test3(
[CVP] Add another non null test (NFC)
2020-06-20 19:01:54 +08:00
; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
%ptr = alloca i8
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
;; OK to remove icmp here since ptr is coming from alloca.
define void @test3_no_null_opt() #0 {
; CHECK-LABEL: @test3_no_null_opt(
[CVP] Add another non null test (NFC)
2020-06-20 19:01:54 +08:00
; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
%ptr = alloca i8
br label %bb
bb:
icmp ne i8* %ptr, null
ret void
}
declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1)
define void @test4(i8* %dest, i8* %src) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
define void @test4_no_null_opt(i8* %dest, i8* %src) #0 {
; CHECK-LABEL: @test4_no_null_opt(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i1)
define void @test5(i8* %dest, i8* %src) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
define void @test5_no_null_opt(i8* %dest, i8* %src) #0 {
; CHECK-LABEL: @test5_no_null_opt(
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
icmp ne i8* %src, null
ret void
}
declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1)
define void @test6(i8* %dest) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
ret void
}
define void @test6_no_null_opt(i8* %dest) #0 {
; CHECK-LABEL: @test6_no_null_opt(
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false)
br label %bb
bb:
icmp ne i8* %dest, null
ret void
}
define void @test7(i8* %dest, i8* %src, i32 %len) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 [[LEN:%.*]], i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i1 false)
br label %bb
bb:
%KEEP1 = icmp ne i8* %dest, null
%KEEP2 = icmp ne i8* %src, null
ret void
}
declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i1)
define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1)* [[DEST:%.*]], i8 addrspace(1)* [[SRC:%.*]], i32 1, i1 false)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8 addrspace(1)* [[DEST]], null
; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8 addrspace(1)* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i1 false)
br label %bb
bb:
%KEEP1 = icmp ne i8 addrspace(1) * %dest, null
%KEEP2 = icmp ne i8 addrspace(1) * %src, null
ret void
}
define void @test9(i8* %dest, i8* %src) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 true)
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null
; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 true)
br label %bb
bb:
%KEEP1 = icmp ne i8* %dest, null
%KEEP2 = icmp ne i8* %src, null
ret void
}
declare void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
define void @test10(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
; CHECK: non_null:
; CHECK-NEXT: call void @test10_helper(i8* nonnull [[ARG1]], i8* [[ARG2:%.*]], i32 [[NON_POINTER_ARG:%.*]])
; CHECK-NEXT: br label [[NULL]]
; CHECK: null:
; CHECK-NEXT: call void @test10_helper(i8* [[ARG1]], i8* [[ARG2]], i32 [[NON_POINTER_ARG]])
; CHECK-NEXT: ret void
;
entry:
%is_null = icmp eq i8* %arg1, null
br i1 %is_null, label %null, label %non_null
non_null:
call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
br label %null
null:
call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
ret void
}
declare void @test11_helper(i8* %arg)
define void @test11(i8* %arg1, i8** %arg2) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
; CHECK: non_null:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: null:
[CVP] Add another non null test (NFC)
2020-06-20 19:01:54 +08:00
; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = alloca i8, align 1
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ]
; CHECK-NEXT: call void @test11_helper(i8* nonnull [[MERGED_ARG]])
; CHECK-NEXT: ret void
;
entry:
%is_null = icmp eq i8* %arg1, null
br i1 %is_null, label %null, label %non_null
non_null:
br label %merge
null:
%another_arg = alloca i8
br label %merge
merge:
%merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null]
call void @test11_helper(i8* %merged_arg)
ret void
}
declare void @test12_helper(i8* %arg)
define void @test12(i8* %arg1, i8** %arg2) {
; CHECK-LABEL: @test12(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
; CHECK: non_null:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: null:
Infer alignment of unmarked loads in IR/bitcode parsing. For IR generated by a compiler, this is really simple: you just take the datalayout from the beginning of the file, and apply it to all the IR later in the file. For optimization testcases that don't care about the datalayout, this is also really simple: we just use the default datalayout. The complexity here comes from the fact that some LLVM tools allow overriding the datalayout: some tools have an explicit flag for this, some tools will infer a datalayout based on the code generation target. Supporting this properly required plumbing through a bunch of new machinery: we want to allow overriding the datalayout after the datalayout is parsed from the file, but before we use any information from it. Therefore, IR/bitcode parsing now has a callback to allow tools to compute the datalayout at the appropriate time. Not sure if I covered all the LLVM tools that want to use the callback. (clang? lli? Misc IR manipulation tools like llvm-link?). But this is at least enough for all the LLVM regression tests, and IR without a datalayout is not something frontends should generate. This change had some sort of weird effects for certain CodeGen regression tests: if the datalayout is overridden with a datalayout with a different program or stack address space, we now parse IR based on the overridden datalayout, instead of the one written in the file (or the default one, if none is specified). This broke a few AVR tests, and one AMDGPU test. Outside the CodeGen tests I mentioned, the test changes are all just fixing CHECK lines and moving around datalayout lines in weird places. Differential Revision: https://reviews.llvm.org/D78403
2020-05-15 03:59:45 +08:00
; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = load i8*, i8** [[ARG2:%.*]], align 8, !nonnull !0
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ]
; CHECK-NEXT: call void @test12_helper(i8* nonnull [[MERGED_ARG]])
; CHECK-NEXT: ret void
;
entry:
%is_null = icmp eq i8* %arg1, null
br i1 %is_null, label %null, label %non_null
non_null:
br label %merge
null:
%another_arg = load i8*, i8** %arg2, !nonnull !{}
br label %merge
merge:
%merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null]
call void @test12_helper(i8* %merged_arg)
ret void
}
[CVP] Add another non null test (NFC)
2020-06-20 19:01:54 +08:00
define i1 @test_store_same_block(i8* %arg) {
; CHECK-LABEL: @test_store_same_block(
; CHECK-NEXT: store i8 0, i8* [[ARG:%.*]], align 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8* [[ARG]], null
; CHECK-NEXT: ret i1 [[CMP]]
;
store i8 0, i8* %arg
%cmp = icmp ne i8* %arg, null
ret i1 %cmp
}
[IR] Convert null-pointer-is-valid into an enum attribute The "null-pointer-is-valid" attribute needs to be checked by many pointer-related combines. To make the check more efficient, convert it from a string into an enum attribute. In the future, this attribute may be replaced with data layout properties. Differential Revision: https://reviews.llvm.org/D78862
2020-04-25 18:57:07 +08:00
attributes #0 = { null_pointer_is_valid }