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[InstCombine] Precommit tests for !annotation metadata handling.

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Florian Hahn 2020-12-16 11:30:01 +00:00
parent a6f5a606fa
commit 70b11cbecd
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test/Transforms/InstCombine/annotations.ll Normal file
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; RUN: opt < %s -instcombine -S | FileCheck --match-full-lines %s
; Test cases to make sure !annotation metadata is preserved, if possible.
; Currently we fail to preserve !annotation metadata in many cases.
; Make sure !annotation metadata is added to new instructions, if the source
; instruction has !annotation metadata.
define i1 @fold_to_new_instruction(i8* %a, i8* %b) {
; CHECK-LABEL: define {{.+}} @fold_to_new_instruction({{.+}}
; CHECK-NEXT: [[C:%.*]] = icmp uge i8* [[A:%.*]], [[B:%[a-z]*]]
; CHECK-NEXT: ret i1 [[C]]
;
%a.c = bitcast i8* %a to i32*, !annotation !0
%b.c = bitcast i8* %b to i32*, !annotation !0
%c = icmp uge i32* %a.c, %b.c, !annotation !0
ret i1 %c
}
; Make sure !annotation is not added to new instructions if the source
; instruction does not have it (even if some folded operands do have
; !annotation).
define i1 @fold_to_new_instruction2(i8* %a, i8* %b) {
; CHECK-LABEL: define {{.+}} @fold_to_new_instruction2({{.+}}
; CHECK-NEXT: [[C:%.*]] = icmp uge i8* [[A:%.*]], [[B:%[a-z]+]]
; CHECK-NEXT: ret i1 [[C]]
;
%a.c = bitcast i8* %a to i32*, !annotation !0
%b.c = bitcast i8* %b to i32*, !annotation !0
%c = icmp uge i32* %a.c, %b.c
ret i1 %c
}
; Make sure !annotation metadata is *not* added if we replace an instruction
; with !annotation with an existing one without.
define i32 @do_not_add_annotation_to_existing_instr(i32 %a, i32 %b) {
; CHECK-LABEL: define {{.+}} @do_not_add_annotation_to_existing_instr({{.+}}
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[A:%.*]], [[B:%[a-z]+]]
; CHECK-NEXT: ret i32 [[ADD]]
;
%add = add i32 %a, %b
%res = add i32 0, %add, !annotation !0
ret i32 %res
}
; memcpy can be expanded inline with load/store. Verify that we keep the
; !annotation metadata.
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind
define void @copy_1_byte(i8* %d, i8* %s) {
; CHECK-LABEL: define {{.+}} @copy_1_byte({{.+}}
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
; CHECK-NEXT: store i8 [[TMP1]], i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 1, i1 false), !annotation !0
ret void
}
declare i8* @memcpy(i8* noalias returned, i8* noalias nocapture readonly, i64) nofree nounwind
define void @libcallcopy_1_byte(i8* %d, i8* %s) {
; CHECK-LABEL: define {{.+}} @libcallcopy_1_byte({{.+}}
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
; CHECK-NEXT: store i8 [[TMP1]], i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call i8* @memcpy(i8* %d, i8* %s, i64 1), !annotation !0
ret void
}
declare i8* @__memcpy_chk(i8*, i8*, i64, i64) nofree nounwind
define void @libcallcopy_1_byte_chk(i8* %d, i8* %s) {
; CHECK-LABEL: define {{.+}} @libcallcopy_1_byte_chk({{.+}}
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
; CHECK-NEXT: store i8 [[TMP1]], i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call i8* @__memcpy_chk(i8* %d, i8* %s, i64 1, i64 1), !annotation !0
ret void
}
declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1) nounwind
define void @move_1_byte(i8* %d, i8* %s) {
; CHECK-LABEL: define {{.+}} @move_1_byte({{.+}}
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
; CHECK-NEXT: store i8 [[TMP1]], i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call void @llvm.memmove.p0i8.p0i8.i32(i8* %d, i8* %s, i32 1, i1 false), !annotation !0
ret void
}
declare i8* @memmove(i8* returned, i8* nocapture readonly, i64) nofree nounwind
define void @libcallmove_1_byte(i8* %d, i8* %s) {
; CHECK-LABEL: define {{.+}} @libcallmove_1_byte({{.+}}
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
; CHECK-NEXT: store i8 [[TMP1]], i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call i8* @memmove(i8* %d, i8* %s, i64 1), !annotation !0
ret void
}
declare i8* @__memmove_chk(i8*, i8*, i64, i64) nofree nounwind
define void @libcallmove_1_byte_chk(i8* %d, i8* %s) {
; CHECK-LABEL: define {{.+}} @libcallmove_1_byte_chk({{.+}}
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[S:%.*]], align 1
; CHECK-NEXT: store i8 [[TMP1]], i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call i8* @__memmove_chk(i8* %d, i8* %s, i64 1, i64 1), !annotation !0
ret void
}
declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1) argmemonly nounwind
define void @set_1_byte(i8* %d) {
; CHECK-LABEL: define {{.+}} @set_1_byte({{.+}}
; CHECK-NEXT: store i8 1, i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call void @llvm.memset.p0i8.i32(i8* %d, i8 1, i32 1, i1 false), !annotation !0
ret void
}
declare i8* @memset(i8*, i32, i64) nofree
define void @libcall_set_1_byte(i8* %d) {
; CHECK-LABEL: define {{.+}} @libcall_set_1_byte({{.+}}
; CHECK-NEXT: store i8 1, i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call i8* @memset(i8* %d, i32 1, i64 1), !annotation !0
ret void
}
declare i8* @__memset_chk(i8*, i32, i64, i64) nofree
define void @libcall_set_1_byte_chk(i8* %d) {
; CHECK-LABEL: define {{.+}} @libcall_set_1_byte_chk({{.+}}
; CHECK-NEXT: store i8 1, i8* [[D:%.*]], align 1
; CHECK-NEXT: ret void
;
call i8* @__memset_chk(i8* %d, i32 1, i64 1, i64 1), !annotation !0
ret void
}
!0 = !{ !"auto-init" }