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clang-p2996/llvm/test/Transforms/Attributor/value-simplify-pointer-info-struct.ll
Nikita Popov 304f1d59ca [IR] Switch everything to use memory attribute 
This switches everything to use the memory attribute proposed in
https://discourse.llvm.org/t/rfc-unify-memory-effect-attributes/65579.
The old argmemonly, inaccessiblememonly and inaccessiblemem_or_argmemonly
attributes are dropped. The readnone, readonly and writeonly attributes
are restricted to parameters only.

The old attributes are auto-upgraded both in bitcode and IR.
The bitcode upgrade is a policy requirement that has to be retained
indefinitely. The IR upgrade is mainly there so it's not necessary
to update all tests using memory attributes in this patch, which
is already large enough. We could drop that part after migrating
tests, or retain it longer term, to make it easier to import IR
from older LLVM versions.

High-level Function/CallBase APIs like doesNotAccessMemory() or
setDoesNotAccessMemory() are mapped transparently to the memory
attribute. Code that directly manipulates attributes (e.g. via
AttributeList) on the other hand needs to switch to working with
the memory attribute instead.

Differential Revision: https://reviews.llvm.org/D135780
2022-11-04 10:21:38 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; RUN: opt -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=9 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=9 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
; RUN: opt -attributor-cgscc -enable-new-pm=0 -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM
;
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
%struct.S = type { i32, double, ptr, i32 }
; struct S {
; int a;
; double b;
; struct S* c;
; int written;
; };
;
; static const struct S GlobalS = {42, 3.14, 0};
;
; int testOneFieldGlobalS() {
; int r = 0;
; if (GlobalS.a != 42)
; r += 1;
; if (GlobalS.b == 3.14)
; r += 2;
; if (GlobalS.c)
; r += 4;
; return r;
; }
;
@GlobalS = internal constant %struct.S { i32 42, double 3.140000e+00, ptr null, i32 0 }, align 8
declare void @harmless_use(ptr nocapture readonly) nofree norecurse nosync nounwind readnone willreturn nocallback
;.
; CHECK: @[[GLOBALS:[a-zA-Z0-9_$"\\.-]+]] = internal constant [[STRUCT_S:%.*]] { i32 42, double 3.140000e+00, ptr null, i32 0 }, align 8
;.
define i32 @testOneFieldGlobalS(i32 %cmpx) {
; CHECK: Function Attrs: nofree norecurse nounwind willreturn memory(none)
; CHECK-LABEL: define {{[^@]+}}@testOneFieldGlobalS
; CHECK-SAME: (i32 [[CMPX:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RMW:%.*]] = atomicrmw add ptr getelementptr inbounds ([[STRUCT_S:%.*]], ptr @GlobalS, i32 0, i32 3), i32 1 monotonic, align 4
; CHECK-NEXT: [[CXI:%.*]] = cmpxchg ptr getelementptr inbounds ([[STRUCT_S]], ptr @GlobalS, i32 0, i32 3), i32 [[CMPX]], i32 7 acq_rel monotonic, align 4
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: unreachable
; CHECK: if.end:
; CHECK-NEXT: br label [[IF_THEN2:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 0, 2
; CHECK-NEXT: br label [[IF_END4:%.*]]
; CHECK: if.end4:
; CHECK-NEXT: br label [[IF_END7:%.*]]
; CHECK: if.then5:
; CHECK-NEXT: unreachable
; CHECK: if.end7:
; CHECK-NEXT: ret i32 2
;
entry:
%i = load i32, ptr @GlobalS, align 8
call void @harmless_use(ptr @GlobalS)
%rmw = atomicrmw add ptr getelementptr inbounds (%struct.S, ptr @GlobalS, i32 0, i32 3), i32 1 monotonic, align 4
%cxi = cmpxchg ptr getelementptr inbounds (%struct.S, ptr @GlobalS, i32 0, i32 3), i32 %cmpx, i32 7 acq_rel monotonic
%cmp = icmp ne i32 %i, 42
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%add = add nsw i32 0, 1
br label %if.end
if.end: ; preds = %if.then, %entry
%r.0 = phi i32 [ %add, %if.then ], [ 0, %entry ]
%i1 = load double, ptr getelementptr inbounds (%struct.S, ptr @GlobalS, i32 0, i32 1), align 8
%cmp1 = fcmp oeq double %i1, 3.140000e+00
br i1 %cmp1, label %if.then2, label %if.end4
if.then2: ; preds = %if.end
%add3 = add nsw i32 %r.0, 2
br label %if.end4
if.end4: ; preds = %if.then2, %if.end
%r.1 = phi i32 [ %add3, %if.then2 ], [ %r.0, %if.end ]
%i2 = load ptr, ptr getelementptr inbounds (%struct.S, ptr @GlobalS, i32 0, i32 2), align 8
%tobool = icmp ne ptr %i2, null
br i1 %tobool, label %if.then5, label %if.end7
if.then5: ; preds = %if.end4
%add6 = add nsw i32 %r.1, 4
br label %if.end7
if.end7: ; preds = %if.then5, %if.end4
%r.2 = phi i32 [ %add6, %if.then5 ], [ %r.1, %if.end4 ]
ret i32 %r.2
}
define i32 @testOneFieldGlobalS_type_mismatch() {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: define {{[^@]+}}@testOneFieldGlobalS_type_mismatch
; CHECK-SAME: () #[[ATTR2:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 0, 1
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: br label [[IF_END4:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: unreachable
; CHECK: if.end4:
; CHECK-NEXT: br label [[IF_END7:%.*]]
; CHECK: if.then5:
; CHECK-NEXT: unreachable
; CHECK: if.end7:
; CHECK-NEXT: ret i32 1
;
entry:
%i = load double, ptr @GlobalS, align 8
%ic = fptosi double %i to i32
%cmp = icmp ne i32 %ic, 42
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%add = add nsw i32 0, 1
br label %if.end
if.end: ; preds = %if.then, %entry
%r.0 = phi i32 [ %add, %if.then ], [ 0, %entry ]
%i1 = load i64, ptr getelementptr inbounds (%struct.S, ptr @GlobalS, i32 0, i32 1), align 8
%i1c = sitofp i64 %i1 to double
%cmp1 = fcmp oeq double %i1c, 3.140000e+00
br i1 %cmp1, label %if.then2, label %if.end4
if.then2: ; preds = %if.end
%add3 = add nsw i32 %r.0, 2
br label %if.end4
if.end4: ; preds = %if.then2, %if.end
%r.1 = phi i32 [ %add3, %if.then2 ], [ %r.0, %if.end ]
%i2 = load i64, ptr getelementptr inbounds (%struct.S, ptr @GlobalS, i32 0, i32 2), align 8
%i2c = inttoptr i64 %i2 to ptr
%tobool = icmp ne ptr %i2c, null
br i1 %tobool, label %if.then5, label %if.end7
if.then5: ; preds = %if.end4
%add6 = add nsw i32 %r.1, 4
br label %if.end7
if.end7: ; preds = %if.then5, %if.end4
%r.2 = phi i32 [ %add6, %if.then5 ], [ %r.1, %if.end4 ]
ret i32 %r.2
}
define i32 @testOneFieldGlobalS_byte_offset_wrong() {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: define {{[^@]+}}@testOneFieldGlobalS_byte_offset_wrong
; CHECK-SAME: () #[[ATTR2]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 0, 1
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[I1:%.*]] = load double, ptr getelementptr (double, ptr @GlobalS, i32 3), align 8
; CHECK-NEXT: [[CMP1:%.*]] = fcmp oeq double [[I1]], 3.140000e+00
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END4:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 1, 2
; CHECK-NEXT: br label [[IF_END4]]
; CHECK: if.end4:
; CHECK-NEXT: [[R_1:%.*]] = phi i32 [ [[ADD3]], [[IF_THEN2]] ], [ 1, [[IF_END]] ]
; CHECK-NEXT: br label [[IF_THEN5:%.*]]
; CHECK: if.then5:
; CHECK-NEXT: [[ADD6:%.*]] = add nsw i32 [[R_1]], 4
; CHECK-NEXT: br label [[IF_END7:%.*]]
; CHECK: if.end7:
; CHECK-NEXT: ret i32 [[ADD6]]
;
entry:
%i = load i32, ptr getelementptr (i32, ptr @GlobalS, i32 1), align 8
%cmp = icmp ne i32 %i, 42
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%add = add nsw i32 0, 1
br label %if.end
if.end: ; preds = %if.then, %entry
%r.0 = phi i32 [ %add, %if.then ], [ 0, %entry ]
%i1 = load double, ptr getelementptr (double, ptr @GlobalS, i32 3), align 8
%cmp1 = fcmp oeq double %i1, 3.140000e+00
br i1 %cmp1, label %if.then2, label %if.end4
if.then2: ; preds = %if.end
%add3 = add nsw i32 %r.0, 2
br label %if.end4
if.end4: ; preds = %if.then2, %if.end
%r.1 = phi i32 [ %add3, %if.then2 ], [ %r.0, %if.end ]
%i2 = load ptr, ptr getelementptr (ptr, ptr @GlobalS, i32 11), align 8
%tobool = icmp ne ptr %i2, null
br i1 %tobool, label %if.then5, label %if.end7
if.then5: ; preds = %if.end4
%add6 = add nsw i32 %r.1, 4
br label %if.end7
if.end7: ; preds = %if.then5, %if.end4
%r.2 = phi i32 [ %add6, %if.then5 ], [ %r.1, %if.end4 ]
ret i32 %r.2
}
;.
; CHECK: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree norecurse nosync nounwind willreturn memory(none) }
; CHECK: attributes #[[ATTR1]] = { nofree norecurse nounwind willreturn memory(none) }
; CHECK: attributes #[[ATTR2]] = { nofree norecurse nosync nounwind willreturn memory(none) }
;.
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