caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
aef0877b1ba5f14eaeece956aa69df6c208b94de
clang-p2996/llvm/test/Transforms/Attributor/align.ll
Johannes Doerfert b1c788d051 [Attributor][FIX] Prevent alignment breakage wrt. must-tail calls 
If we have a must-tail call the callee and caller need to have matching
ABIs. Part of that is alignment which we might modify when we deduce
alignment of arguments of either. Since we would need to keep them in
sync, which is not as simple, we simply avoid deducing alignment for
arguments of the must-tail caller or callee.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D76673
2020-04-01 21:40:07 -05:00

577 lines
20 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --disable --function-signature --scrub-attributes
; RUN: opt -attributor -attributor-manifest-internal -attributor-disable=false -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=6 -S < %s | FileCheck %s --check-prefixes=ATTRIBUTOR,ATTRIBUTOR_MODULE
; RUN: opt -attributor-cgscc -attributor-manifest-internal -attributor-disable=false -attributor-annotate-decl-cs -attributor-max-iterations=6 -S < %s | FileCheck %s --check-prefixes=ATTRIBUTOR,ATTRIBUTOR_CGSCC
; RUN: opt -passes=attributor -attributor-manifest-internal -attributor-disable=false -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=6 -S < %s | FileCheck %s --check-prefixes=ATTRIBUTOR,ATTRIBUTOR_MODULE
; RUN: opt -passes=attributor-cgscc -attributor-manifest-internal -attributor-disable=false -attributor-annotate-decl-cs -attributor-max-iterations=6 -S < %s | FileCheck %s --check-prefixes=ATTRIBUTOR,ATTRIBUTOR_CGSCC
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; Test cases specifically designed for "align" attribute.
; We use FIXME's to indicate problems and missing attributes.
; TEST 1
; ATTRIBUTOR: define align 8 i32* @test1(i32* nofree readnone returned align 8 "no-capture-maybe-returned" %0)
define i32* @test1(i32* align 8 %0) #0 {
ret i32* %0
}
; TEST 2
; ATTRIBUTOR: define i32* @test2(i32* nofree readnone returned "no-capture-maybe-returned" %0)
define i32* @test2(i32* %0) #0 {
ret i32* %0
}
; TEST 3
; ATTRIBUTOR: define align 4 i32* @test3(i32* nofree readnone align 8 "no-capture-maybe-returned" %0, i32* nofree readnone align 4 "no-capture-maybe-returned" %1, i1 %2)
define i32* @test3(i32* align 8 %0, i32* align 4 %1, i1 %2) #0 {
%ret = select i1 %2, i32* %0, i32* %1
ret i32* %ret
}
; TEST 4
; ATTRIBUTOR: define align 32 i32* @test4(i32* nofree readnone align 32 "no-capture-maybe-returned" %0, i32* nofree readnone align 32 "no-capture-maybe-returned" %1, i1 %2)
define i32* @test4(i32* align 32 %0, i32* align 32 %1, i1 %2) #0 {
%ret = select i1 %2, i32* %0, i32* %1
ret i32* %ret
}
; TEST 5
declare i32* @unknown()
declare align 8 i32* @align8()
; ATTRIBUTOR: define align 8 i32* @test5_1()
define i32* @test5_1() {
%ret = tail call align 8 i32* @unknown()
ret i32* %ret
}
; ATTRIBUTOR: define align 8 i32* @test5_2()
define i32* @test5_2() {
%ret = tail call i32* @align8()
ret i32* %ret
}
; TEST 6
; SCC
; ATTRIBUTOR: define noalias nonnull align 536870912 dereferenceable(4294967295) i32* @test6_1()
define i32* @test6_1() #0 {
%ret = tail call i32* @test6_2()
ret i32* %ret
}
; ATTRIBUTOR: define noalias nonnull align 536870912 dereferenceable(4294967295) i32* @test6_2()
define i32* @test6_2() #0 {
%ret = tail call i32* @test6_1()
ret i32* %ret
}
; char a1 __attribute__((aligned(8)));
; char a2 __attribute__((aligned(16)));
;
; char* f1(char* a ){
; return a?a:f2(&a1);
; }
; char* f2(char* a){
; return a?f1(a):f3(&a2);
; }
;
; char* f3(char* a){
; return a?&a1: f1(&a2);
; }
@a1 = common global i8 0, align 8
@a2 = common global i8 0, align 16
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f1(i8* readnone %0) local_unnamed_addr #0 {
%2 = icmp eq i8* %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
%4 = tail call i8* @f2(i8* nonnull @a1)
%l = load i8, i8* %4
br label %5
; <label>:5: ; preds = %1, %3
%6 = phi i8* [ %4, %3 ], [ %0, %1 ]
ret i8* %6
}
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f2(i8* readnone %0) local_unnamed_addr #0 {
%2 = icmp eq i8* %0, null
br i1 %2, label %5, label %3
; <label>:3: ; preds = %1
%4 = tail call i8* @f1(i8* nonnull %0)
br label %7
; <label>:5: ; preds = %1
%6 = tail call i8* @f3(i8* nonnull @a2)
br label %7
; <label>:7: ; preds = %5, %3
%8 = phi i8* [ %4, %3 ], [ %6, %5 ]
ret i8* %8
}
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f3(i8* readnone %0) local_unnamed_addr #0 {
%2 = icmp eq i8* %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
%4 = tail call i8* @f1(i8* nonnull @a2)
br label %5
; <label>:5: ; preds = %1, %3
%6 = phi i8* [ %4, %3 ], [ @a1, %1 ]
ret i8* %6
}
; UTC_ARGS: --enable
; TEST 7
; Better than IR information
define align 4 i8* @test7() #0 {
; ATTRIBUTOR_MODULE-LABEL: define {{[^@]+}}@test7()
; ATTRIBUTOR_MODULE-NEXT: [[C:%.*]] = tail call i8* @f1(i8* noalias nofree nonnull readnone align 8 dereferenceable(1) @a1)
; ATTRIBUTOR_MODULE-NEXT: ret i8* [[C]]
;
; ATTRIBUTOR_CGSCC-LABEL: define {{[^@]+}}@test7()
; ATTRIBUTOR_CGSCC-NEXT: [[C:%.*]] = tail call nonnull align 8 dereferenceable(1) i8* @f1(i8* noalias nofree nonnull readnone align 8 dereferenceable(1) @a1)
; ATTRIBUTOR_CGSCC-NEXT: ret i8* [[C]]
;
%c = tail call i8* @f1(i8* align 8 dereferenceable(1) @a1)
ret i8* %c
}
; TEST 7b
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f1b(i8* readnone %0) local_unnamed_addr #0 {
; ATTRIBUTOR_MODULE-LABEL: define {{[^@]+}}@f1b
; ATTRIBUTOR_MODULE-SAME: (i8* noalias nofree nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
; ATTRIBUTOR_MODULE-NEXT: [[TMP2:%.*]] = icmp eq i8* [[TMP0]], null
; ATTRIBUTOR_MODULE-NEXT: br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP5:%.*]]
; ATTRIBUTOR_MODULE: 3:
; ATTRIBUTOR_MODULE-NEXT: [[TMP4:%.*]] = tail call align 8 i8* @f2b()
; ATTRIBUTOR_MODULE-NEXT: [[L:%.*]] = load i8, i8* [[TMP4]], align 8
; ATTRIBUTOR_MODULE-NEXT: store i8 [[L]], i8* @a1, align 8
; ATTRIBUTOR_MODULE-NEXT: br label [[TMP5]]
; ATTRIBUTOR_MODULE: 5:
; ATTRIBUTOR_MODULE-NEXT: [[TMP6:%.*]] = phi i8* [ [[TMP4]], [[TMP3]] ], [ [[TMP0]], [[TMP1:%.*]] ]
; ATTRIBUTOR_MODULE-NEXT: ret i8* [[TMP6]]
;
; ATTRIBUTOR_CGSCC-LABEL: define {{[^@]+}}@f1b
; ATTRIBUTOR_CGSCC-SAME: (i8* nofree nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr
; ATTRIBUTOR_CGSCC-NEXT: [[TMP2:%.*]] = icmp eq i8* [[TMP0]], null
; ATTRIBUTOR_CGSCC-NEXT: br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP5:%.*]]
; ATTRIBUTOR_CGSCC: 3:
; ATTRIBUTOR_CGSCC-NEXT: [[TMP4:%.*]] = tail call align 8 i8* @f2b()
; ATTRIBUTOR_CGSCC-NEXT: [[L:%.*]] = load i8, i8* [[TMP4]], align 8
; ATTRIBUTOR_CGSCC-NEXT: store i8 [[L]], i8* @a1, align 8
; ATTRIBUTOR_CGSCC-NEXT: br label [[TMP5]]
; ATTRIBUTOR_CGSCC: 5:
; ATTRIBUTOR_CGSCC-NEXT: [[TMP6:%.*]] = phi i8* [ [[TMP4]], [[TMP3]] ], [ [[TMP0]], [[TMP1:%.*]] ]
; ATTRIBUTOR_CGSCC-NEXT: ret i8* [[TMP6]]
;
%2 = icmp eq i8* %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
%4 = tail call i8* @f2b(i8* nonnull @a1)
%l = load i8, i8* %4
store i8 %l, i8* @a1
br label %5
; <label>:5: ; preds = %1, %3
%6 = phi i8* [ %4, %3 ], [ %0, %1 ]
ret i8* %6
}
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f2b(i8* readnone %0) local_unnamed_addr #0 {
;
; ATTRIBUTOR-LABEL: define {{[^@]+}}@f2b() local_unnamed_addr
; ATTRIBUTOR-NEXT: [[TMP1:%.*]] = icmp eq i8* @a1, null
; ATTRIBUTOR-NEXT: br i1 [[TMP1]], label [[TMP4:%.*]], label [[TMP2:%.*]]
; ATTRIBUTOR: 2:
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = tail call i8* @f1b(i8* noalias nofree nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" @a1)
; ATTRIBUTOR-NEXT: br label [[TMP6:%.*]]
; ATTRIBUTOR: 4:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = tail call i8* @f3b()
; ATTRIBUTOR-NEXT: br label [[TMP6]]
; ATTRIBUTOR: 6:
; ATTRIBUTOR-NEXT: [[TMP7:%.*]] = phi i8* [ [[TMP3]], [[TMP2]] ], [ [[TMP5]], [[TMP4]] ]
; ATTRIBUTOR-NEXT: ret i8* [[TMP7]]
;
%2 = icmp eq i8* %0, null
br i1 %2, label %5, label %3
; <label>:3: ; preds = %1
%4 = tail call i8* @f1b(i8* nonnull %0)
br label %7
; <label>:5: ; preds = %1
%6 = tail call i8* @f3b(i8* nonnull @a2)
br label %7
; <label>:7: ; preds = %5, %3
%8 = phi i8* [ %4, %3 ], [ %6, %5 ]
ret i8* %8
}
; Function Attrs: nounwind readnone ssp uwtable
define internal i8* @f3b(i8* readnone %0) local_unnamed_addr #0 {
;
; ATTRIBUTOR-LABEL: define {{[^@]+}}@f3b() local_unnamed_addr
; ATTRIBUTOR-NEXT: [[TMP1:%.*]] = icmp eq i8* @a2, null
; ATTRIBUTOR-NEXT: br i1 [[TMP1]], label [[TMP2:%.*]], label [[TMP4:%.*]]
; ATTRIBUTOR: 2:
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = tail call i8* @f1b(i8* noalias nofree nonnull readnone align 16 dereferenceable(1) @a2)
; ATTRIBUTOR-NEXT: br label [[TMP4]]
; ATTRIBUTOR: 4:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = phi i8* [ [[TMP3]], [[TMP2]] ], [ @a1, [[TMP0:%.*]] ]
; ATTRIBUTOR-NEXT: ret i8* [[TMP5]]
;
%2 = icmp eq i8* %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
%4 = tail call i8* @f1b(i8* nonnull @a2)
br label %5
; <label>:5: ; preds = %1, %3
%6 = phi i8* [ %4, %3 ], [ @a1, %1 ]
ret i8* %6
}
define align 4 i32* @test7b(i32* align 32 %p) #0 {
; ATTRIBUTOR-LABEL: define {{[^@]+}}@test7b
; ATTRIBUTOR-SAME: (i32* nofree readnone returned align 32 "no-capture-maybe-returned" [[P:%.*]])
; ATTRIBUTOR-NEXT: [[TMP1:%.*]] = tail call i8* @f1b(i8* noalias nofree nonnull readnone align 8 dereferenceable(1) @a1)
; ATTRIBUTOR-NEXT: ret i32* [[P]]
;
tail call i8* @f1b(i8* align 8 dereferenceable(1) @a1)
ret i32* %p
}
; UTC_ARGS: --disable
; TEST 8
define void @test8_helper() {
%ptr0 = tail call i32* @unknown()
%ptr1 = tail call align 4 i32* @unknown()
%ptr2 = tail call align 8 i32* @unknown()
tail call void @test8(i32* %ptr1, i32* %ptr1, i32* %ptr0)
; ATTRIBUTOR: tail call void @test8(i32* noalias readnone align 4 %ptr1, i32* noalias readnone align 4 %ptr1, i32* noalias readnone %ptr0)
tail call void @test8(i32* %ptr2, i32* %ptr1, i32* %ptr1)
; ATTRIBUTOR: tail call void @test8(i32* noalias readnone align 8 %ptr2, i32* noalias readnone align 4 %ptr1, i32* noalias readnone align 4 %ptr1)
tail call void @test8(i32* %ptr2, i32* %ptr1, i32* %ptr1)
; ATTRIBUTOR: tail call void @test8(i32* noalias readnone align 8 %ptr2, i32* noalias readnone align 4 %ptr1, i32* noalias readnone align 4 %ptr1)
ret void
}
declare void @user_i32_ptr(i32* nocapture readnone) nounwind
define internal void @test8(i32* %a, i32* %b, i32* %c) {
; ATTRIBUTOR_MODULE: define internal void @test8(i32* noalias nocapture readnone align 4 %a, i32* noalias nocapture readnone align 4 %b, i32* noalias nocapture readnone %c)
; ATTRIBUTOR_CGSCC: define internal void @test8(i32* nocapture readnone align 4 %a, i32* nocapture readnone align 4 %b, i32* nocapture readnone %c)
call void @user_i32_ptr(i32* %a)
call void @user_i32_ptr(i32* %b)
call void @user_i32_ptr(i32* %c)
ret void
}
declare void @test9_helper(i32* %A)
define void @test9_traversal(i1 %c, i32* align 4 %B, i32* align 8 %C) {
%sel = select i1 %c, i32* %B, i32* %C
call void @test9_helper(i32* %sel)
ret void
}
; FIXME: This will work with an upcoming patch (D66618 or similar)
; define align 32 i32* @test10a(i32* align 32 "no-capture-maybe-returned" %p)
; ATTRIBUTOR: define i32* @test10a(i32* nofree nonnull align 32 dereferenceable(4) "no-capture-maybe-returned" %p)
define i32* @test10a(i32* align 32 %p) {
; ATTRIBUTOR: %l = load i32, i32* %p, align 32
%l = load i32, i32* %p
%c = icmp eq i32 %l, 0
br i1 %c, label %t, label %f
t:
%r = call i32* @test10a(i32* %p)
; FIXME: This will work with an upcoming patch (D66618 or similar)
; store i32 1, i32* %r, align 32
; ATTRIBUTOR: store i32 1, i32* %r
store i32 1, i32* %r
%g0 = getelementptr i32, i32* %p, i32 8
br label %e
f:
%g1 = getelementptr i32, i32* %p, i32 8
; FIXME: This will work with an upcoming patch (D66618 or similar)
; store i32 -1, i32* %g1, align 32
; ATTRIBUTOR: store i32 -1, i32* %g1
store i32 -1, i32* %g1
br label %e
e:
%phi = phi i32* [%g0, %t], [%g1, %f]
ret i32* %phi
}
; FIXME: This will work with an upcoming patch (D66618 or similar)
; define align 32 i32* @test10b(i32* align 32 "no-capture-maybe-returned" %p)
; ATTRIBUTOR: define i32* @test10b(i32* nofree nonnull align 32 dereferenceable(4) "no-capture-maybe-returned" %p)
define i32* @test10b(i32* align 32 %p) {
; ATTRIBUTOR: %l = load i32, i32* %p, align 32
%l = load i32, i32* %p
%c = icmp eq i32 %l, 0
br i1 %c, label %t, label %f
t:
%r = call i32* @test10b(i32* %p)
; FIXME: This will work with an upcoming patch (D66618 or similar)
; store i32 1, i32* %r, align 32
; ATTRIBUTOR: store i32 1, i32* %r
store i32 1, i32* %r
%g0 = getelementptr i32, i32* %p, i32 8
br label %e
f:
%g1 = getelementptr i32, i32* %p, i32 -8
; FIXME: This will work with an upcoming patch (D66618 or similar)
; store i32 -1, i32* %g1, align 32
; ATTRIBUTOR: store i32 -1, i32* %g1
store i32 -1, i32* %g1
br label %e
e:
%phi = phi i32* [%g0, %t], [%g1, %f]
ret i32* %phi
}
; ATTRIBUTOR: define i64 @test11(i32* nocapture nofree nonnull readonly align 8 dereferenceable(8) %p)
define i64 @test11(i32* %p) {
%p-cast = bitcast i32* %p to i64*
%ret = load i64, i64* %p-cast, align 8
ret i64 %ret
}
; TEST 12
; Test for deduction using must-be-executed-context and GEP instruction
; FXIME: %p should have nonnull
; ATTRIBUTOR: define i64 @test12-1(i32* nocapture nofree readonly align 16 %p)
define i64 @test12-1(i32* align 4 %p) {
%p-cast = bitcast i32* %p to i64*
%arrayidx0 = getelementptr i64, i64* %p-cast, i64 1
%arrayidx1 = getelementptr i64, i64* %arrayidx0, i64 3
%ret = load i64, i64* %arrayidx1, align 16
ret i64 %ret
}
; ATTRIBUTOR: define i64 @test12-2(i32* nocapture nofree nonnull readonly align 16 dereferenceable(8) %p)
define i64 @test12-2(i32* align 4 %p) {
%p-cast = bitcast i32* %p to i64*
%arrayidx0 = getelementptr i64, i64* %p-cast, i64 0
%ret = load i64, i64* %arrayidx0, align 16
ret i64 %ret
}
; FXIME: %p should have nonnull
; ATTRIBUTOR: define void @test12-3(i32* nocapture nofree writeonly align 16 %p)
define void @test12-3(i32* align 4 %p) {
%p-cast = bitcast i32* %p to i64*
%arrayidx0 = getelementptr i64, i64* %p-cast, i64 1
%arrayidx1 = getelementptr i64, i64* %arrayidx0, i64 3
store i64 0, i64* %arrayidx1, align 16
ret void
}
; ATTRIBUTOR: define void @test12-4(i32* nocapture nofree nonnull writeonly align 16 dereferenceable(8) %p)
define void @test12-4(i32* align 4 %p) {
%p-cast = bitcast i32* %p to i64*
%arrayidx0 = getelementptr i64, i64* %p-cast, i64 0
store i64 0, i64* %arrayidx0, align 16
ret void
}
declare void @use(i64*) willreturn nounwind
; ATTRIBUTOR: define void @test12-5(i32* align 16 %p)
define void @test12-5(i32* align 4 %p) {
%p-cast = bitcast i32* %p to i64*
%arrayidx0 = getelementptr i64, i64* %p-cast, i64 1
%arrayidx1 = getelementptr i64, i64* %arrayidx0, i64 3
tail call void @use(i64* align 16 %arrayidx1)
ret void
}
; ATTRIBUTOR: define void @test12-6(i32* align 16 %p)
define void @test12-6(i32* align 4 %p) {
%p-cast = bitcast i32* %p to i64*
%arrayidx0 = getelementptr i64, i64* %p-cast, i64 0
tail call void @use(i64* align 16 %arrayidx0)
ret void
}
define void @test13(i1 %c, i32* align 32 %dst) #0 {
; ATTRIBUTOR-LABEL: define {{[^@]+}}@test13
; ATTRIBUTOR-SAME: (i1 [[C:%.*]], i32* nocapture nofree writeonly align 32 [[DST:%.*]])
; ATTRIBUTOR-NEXT: br i1 [[C]], label [[TRUEBB:%.*]], label [[FALSEBB:%.*]]
; ATTRIBUTOR: truebb:
; ATTRIBUTOR-NEXT: br label [[END:%.*]]
; ATTRIBUTOR: falsebb:
; ATTRIBUTOR-NEXT: br label [[END]]
; ATTRIBUTOR: end:
; ATTRIBUTOR-NEXT: [[PTR:%.*]] = phi i32* [ [[DST]], [[TRUEBB]] ], [ null, [[FALSEBB]] ]
; ATTRIBUTOR-NEXT: store i32 0, i32* [[PTR]], align 32
; ATTRIBUTOR-NEXT: ret void
;
br i1 %c, label %truebb, label %falsebb
truebb:
br label %end
falsebb:
br label %end
end:
%ptr = phi i32* [ %dst, %truebb ], [ null, %falsebb ]
store i32 0, i32* %ptr
ret void
}
define void @test13-1(i1 %c, i32* align 32 %dst) {
; ATTRIBUTOR-LABEL: @test13-1(
; ATTRIBUTOR-NEXT: br i1 [[C:%.*]], label [[TRUEBB:%.*]], label [[FALSEBB:%.*]]
; ATTRIBUTOR: truebb:
; ATTRIBUTOR-NEXT: br label [[END:%.*]]
; ATTRIBUTOR: falsebb:
; ATTRIBUTOR-NEXT: br label [[END]]
; ATTRIBUTOR: end:
; ATTRIBUTOR-NEXT: [[PTR:%.*]] = phi i32* [ [[DST:%.*]], [[TRUEBB]] ], [ inttoptr (i64 48 to i32*), [[FALSEBB]] ]
; ATTRIBUTOR-NEXT: store i32 0, i32* [[PTR]], align 16
; ATTRIBUTOR-NEXT: ret void
;
br i1 %c, label %truebb, label %falsebb
truebb:
br label %end
falsebb:
br label %end
end:
%ptr = phi i32* [ %dst, %truebb ], [ inttoptr (i64 48 to i32*), %falsebb ]
store i32 0, i32* %ptr
ret void
}
define void @test13-2(i1 %c, i32* align 32 %dst) {
; ATTRIBUTOR-LABEL: @test13-2(
; ATTRIBUTOR-NEXT: br i1 [[C:%.*]], label [[TRUEBB:%.*]], label [[FALSEBB:%.*]]
; ATTRIBUTOR: truebb:
; ATTRIBUTOR-NEXT: br label [[END:%.*]]
; ATTRIBUTOR: falsebb:
; ATTRIBUTOR-NEXT: br label [[END]]
; ATTRIBUTOR: end:
; ATTRIBUTOR-NEXT: [[PTR:%.*]] = phi i32* [ [[DST:%.*]], [[TRUEBB]] ], [ inttoptr (i64 160 to i32*), [[FALSEBB]] ]
; ATTRIBUTOR-NEXT: store i32 0, i32* [[PTR]], align 32
; ATTRIBUTOR-NEXT: ret void
;
br i1 %c, label %truebb, label %falsebb
truebb:
br label %end
falsebb:
br label %end
end:
%ptr = phi i32* [ %dst, %truebb ], [ inttoptr (i64 160 to i32*), %falsebb ]
store i32 0, i32* %ptr
ret void
}
define void @test13-3(i1 %c, i32* align 32 %dst) {
; ATTRIBUTOR-LABEL: @test13-3(
; ATTRIBUTOR-NEXT: br i1 [[C:%.*]], label [[TRUEBB:%.*]], label [[FALSEBB:%.*]]
; ATTRIBUTOR: truebb:
; ATTRIBUTOR-NEXT: br label [[END:%.*]]
; ATTRIBUTOR: falsebb:
; ATTRIBUTOR-NEXT: br label [[END]]
; ATTRIBUTOR: end:
; ATTRIBUTOR-NEXT: [[PTR:%.*]] = phi i32* [ [[DST:%.*]], [[TRUEBB]] ], [ inttoptr (i64 128 to i32*), [[FALSEBB]] ]
; ATTRIBUTOR-NEXT: store i32 0, i32* [[PTR]], align 32
; ATTRIBUTOR-NEXT: ret void
;
br i1 %c, label %truebb, label %falsebb
truebb:
br label %end
falsebb:
br label %end
end:
%ptr = phi i32* [ %dst, %truebb ], [ inttoptr (i64 128 to i32*), %falsebb ]
store i32 0, i32* %ptr
ret void
}
; Don't crash on ptr2int/int2ptr uses.
define i64 @ptr2int(i32* %p) {
%p2i = ptrtoint i32* %p to i64
ret i64 %p2i
}
define i64* @int2ptr(i64 %i) {
%i2p = inttoptr i64 %i to i64*
ret i64* %i2p
}
; Use the store alignment only for the pointer operand.
define void @aligned_store(i8* %Value, i8** %Ptr) {
; ATTRIBUTOR: define void @aligned_store(i8* nofree writeonly %Value, i8** nocapture nofree nonnull writeonly align 32 dereferenceable(8) %Ptr)
store i8* %Value, i8** %Ptr, align 32
ret void
}
; UTC_ARGS: --enable
declare i8* @some_func(i8*)
define void @align_call_op_not_store(i8* align 2048 %arg) {
; ATTRIBUTOR-LABEL: define {{[^@]+}}@align_call_op_not_store
; ATTRIBUTOR-SAME: (i8* align 2048 [[ARG:%.*]])
; ATTRIBUTOR-NEXT: [[UNKNOWN:%.*]] = call i8* @some_func(i8* align 2048 [[ARG]])
; ATTRIBUTOR-NEXT: store i8 0, i8* [[UNKNOWN]]
; ATTRIBUTOR-NEXT: ret void
;
%unknown = call i8* @some_func(i8* %arg)
store i8 0, i8* %unknown
ret void
}
define void @align_store_after_bc(i32* align 2048 %arg) {
;
; ATTRIBUTOR-LABEL: define {{[^@]+}}@align_store_after_bc
; ATTRIBUTOR-SAME: (i32* nocapture nofree nonnull writeonly align 2048 dereferenceable(1) [[ARG:%.*]])
; ATTRIBUTOR-NEXT: [[BC:%.*]] = bitcast i32* [[ARG]] to i8*
; ATTRIBUTOR-NEXT: store i8 0, i8* [[BC]], align 2048
; ATTRIBUTOR-NEXT: ret void
;
%bc = bitcast i32* %arg to i8*
store i8 0, i8* %bc
ret void
}
; Make sure we do not annotate the callee of a must-tail call with an alignment
; we cannot also put on the caller.
@cnd = external global i1
define i32 @musttail_callee_1(i32* %p) {
%v = load i32, i32* %p, align 32
ret i32 %v
}
define i32 @musttail_caller_1(i32* %p) {
%c = load i1, i1* @cnd
br i1 %c, label %mt, label %exit
mt:
%v = musttail call i32 @musttail_callee_1(i32* %p)
ret i32 %v
exit:
ret i32 0
}
; UTC_ARGS: --disable
attributes #0 = { nounwind uwtable noinline }
attributes #1 = { uwtable noinline }
attributes #2 = { "null-pointer-is-valid"="true" }
Reference in New Issue View Git Blame Copy Permalink