1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc %s -o - | FileCheck %s 3 4; Previously, we would accidentally leave behind SP adjustments to setup a call 5; frame for the musttail call target, and SP adjustments would end up 6; unbalanced. Reported as https://crbug.com/1026882. 7 8target datalayout = "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:32-n8:16:32-a:0:32-S32" 9target triple = "i386-pc-windows-msvc19.16.0" 10 11; 20 bytes of memory. 12%struct.Args = type { i32, i32, i32, i32, i32 } 13 14declare dso_local x86_thiscallcc void @methodWithVtorDisp(ptr nocapture readonly, ptr inalloca(<{ %struct.Args }>)) 15 16; Function Attrs: nounwind optsize 17define dso_local x86_thiscallcc void @methodWithVtorDisp_thunk(ptr %0, ptr inalloca(<{ %struct.Args }>) %1) #0 { 18; CHECK-LABEL: methodWithVtorDisp_thunk: 19; CHECK: # %bb.0: 20; CHECK-NEXT: pushl %esi 21; CHECK-NEXT: movl %ecx, %esi 22; CHECK-NEXT: subl -4(%ecx), %esi 23; CHECK-NEXT: pushl {{[0-9]+}}(%esp) 24; CHECK-NEXT: pushl $_methodWithVtorDisp_thunk 25; CHECK-NEXT: calll ___cyg_profile_func_exit 26; CHECK-NEXT: addl $8, %esp 27; CHECK-NEXT: movl %esi, %ecx 28; CHECK-NEXT: popl %esi 29; CHECK-NEXT: jmp _methodWithVtorDisp # TAILCALL 30 %3 = getelementptr inbounds i8, ptr %0, i32 -4 31 %4 = load i32, ptr %3, align 4 32 %5 = sub i32 0, %4 33 %6 = getelementptr i8, ptr %0, i32 %5 34 %7 = call ptr @llvm.returnaddress(i32 0) 35 call void @__cyg_profile_func_exit(ptr @methodWithVtorDisp_thunk, ptr %7) 36 musttail call x86_thiscallcc void @methodWithVtorDisp(ptr %6, ptr inalloca(<{ %struct.Args }>) nonnull %1) 37 ret void 38} 39 40declare void @__cyg_profile_func_exit(ptr, ptr) 41 42; Function Attrs: nofree nosync nounwind readnone willreturn 43declare ptr @llvm.returnaddress(i32 immarg) #1 44 45attributes #0 = { nounwind optsize } 46attributes #1 = { nofree nosync nounwind readnone willreturn } 47