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Revert "[ArgPromotion] Copy additional metadata for loads."

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This reverts commit 166620a4f01f10e688428caf132a147c0acc9183.

A miscompile has been reported in https://reviews.llvm.org/D93927#2653480
and following.
This commit is contained in:
Nikita Popov 2021-03-26 21:32:32 +01:00
parent ef79ba8304
commit 9c42462d88
2 changed files with 0 additions and 76 deletions
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6
lib/Transforms/IPO/ArgumentPromotion.cpp
View File

@ -312,12 +312,6 @@ doPromotion(Function *F, SmallPtrSetImpl<Argument *> &ArgsToPromote,
AAMDNodes AAInfo;
OrigLoad->getAAMetadata(AAInfo);
newLoad->setAAMetadata(AAInfo);
// And other metadata.
newLoad->copyMetadata(
*OrigLoad,
{LLVMContext::MD_nontemporal, LLVMContext::MD_nonnull,
LLVMContext::MD_dereferenceable, LLVMContext::MD_align,
LLVMContext::MD_noundef, LLVMContext::MD_range});
Args.push_back(newLoad);
ArgAttrVec.push_back(AttributeSet());

70
test/Transforms/ArgumentPromotion/metadata.ll
View File

@ -1,70 +0,0 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt < %s -argpromotion -S | FileCheck %s
define i32 @should_copy_range(i32* %x) {
; CHECK-LABEL: define {{[^@]+}}@should_copy_range
; CHECK-SAME: (i32* [[X:%.*]]) {
; CHECK-NEXT: [[X_VAL:%.*]] = load i32, i32* [[X]], align 4, !range !0
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @f_load_range(i32 [[X_VAL]])
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @f_load_range(i32* %x)
ret i32 %1
}
define internal i32 @f_load_range(i32* %v) {
; CHECK-LABEL: define {{[^@]+}}@f_load_range
; CHECK-SAME: (i32 [[V_VAL:%.*]]) {
; CHECK-NEXT: ret i32 [[V_VAL]]
;
%1 = load i32, i32* %v, align 4, !range !0
ret i32 %1
}
define i32* @should_copy_nonnull(i32** %x) {
; CHECK-LABEL: define {{[^@]+}}@should_copy_nonnull
; CHECK-SAME: (i32** [[X:%.*]]) {
; CHECK-NEXT: [[X_VAL:%.*]] = load i32*, i32** [[X]], align 4, !nonnull !1
; CHECK-NEXT: [[TMP1:%.*]] = call i32* @f_load_nonnull(i32* [[X_VAL]])
; CHECK-NEXT: ret i32* [[TMP1]]
;
%1 = call i32* @f_load_nonnull(i32** %x)
ret i32* %1
}
define internal i32* @f_load_nonnull(i32** %v) {
; CHECK-LABEL: define {{[^@]+}}@f_load_nonnull
; CHECK-SAME: (i32* [[V_VAL:%.*]]) {
; CHECK-NEXT: ret i32* [[V_VAL]]
;
%1 = load i32*, i32** %v, align 4, !nonnull !1
ret i32* %1
}
define i32* @should_copy_dereferenceable(i32** %x) {
; CHECK-LABEL: define {{[^@]+}}@should_copy_dereferenceable
; CHECK-SAME: (i32** [[X:%.*]]) {
; CHECK-NEXT: [[X_VAL:%.*]] = load i32*, i32** [[X]], align 4, !dereferenceable !2
; CHECK-NEXT: [[TMP1:%.*]] = call i32* @f_load_dereferenceable(i32* [[X_VAL]])
; CHECK-NEXT: ret i32* [[TMP1]]
;
%1 = call i32* @f_load_dereferenceable(i32** %x)
ret i32* %1
}
define internal i32* @f_load_dereferenceable(i32** %v) {
; CHECK-LABEL: define {{[^@]+}}@f_load_dereferenceable
; CHECK-SAME: (i32* [[V_VAL:%.*]]) {
; CHECK-NEXT: ret i32* [[V_VAL]]
;
%1 = load i32*, i32** %v, align 4, !dereferenceable !2
ret i32* %1
}
; CHECK: !0 = !{i32 0, i32 4}
; CHECK-NEXT: !1 = !{}
; CHECK-NEXT: !2 = !{i64 42}
;
!0 = !{i32 0, i32 4}
!1 = !{}
!2 = !{i64 42}