lifetime.ll
1.17 KB
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -O2 -S | FileCheck %s
; performCallSlotOptzn in MemCpy should not exchange the calls to
; @llvm.lifetime.start and @llvm.memcpy.
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #1
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
define void @_ZN4CordC2EOS_(i8* nocapture dereferenceable(16) %arg1) {
; CHECK-LABEL: @_ZN4CordC2EOS_(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP_SROA_3_0_ARG1_SROA_RAW_IDX:%.*]] = getelementptr inbounds i8, i8* [[ARG1:%.*]], i64 7
; CHECK-NEXT: store i8 0, i8* [[TMP_SROA_3_0_ARG1_SROA_RAW_IDX]], align 1
; CHECK-NEXT: ret void
;
bb:
%tmp = alloca [8 x i8], align 8
%tmp5 = bitcast [8 x i8]* %tmp to i8*
call void @llvm.lifetime.start.p0i8(i64 16, i8* %tmp5)
%tmp10 = getelementptr inbounds i8, i8* %tmp5, i64 7
store i8 0, i8* %tmp10, align 1
call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %arg1, i8* align 8 %tmp5, i64 16, i1 false)
call void @llvm.lifetime.end.p0i8(i64 16, i8* %tmp5)
ret void
}
attributes #1 = { argmemonly nounwind }