| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc %s -o - | FileCheck %s |
| |
| ; Previously, we would accidentally leave behind SP adjustments to setup a call |
| ; frame for the musttail call target, and SP adjustments would end up |
| ; unbalanced. Reported as https://crbug.com/1026882. |
| |
| target 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" |
| target triple = "i386-pc-windows-msvc19.16.0" |
| |
| ; 20 bytes of memory. |
| %struct.Args = type { i32, i32, i32, i32, i32 } |
| |
| declare dso_local x86_thiscallcc void @methodWithVtorDisp(i8* nocapture readonly, <{ %struct.Args }>* inalloca) |
| |
| define dso_local x86_thiscallcc void @methodWithVtorDisp_thunk(i8* %0, <{ %struct.Args }>* inalloca %1) #0 { |
| ; CHECK-LABEL: methodWithVtorDisp_thunk: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: pushl %esi |
| ; CHECK-NEXT: movl %ecx, %esi |
| ; CHECK-NEXT: subl -4(%ecx), %esi |
| ; CHECK-NEXT: pushl {{[0-9]+}}(%esp) |
| ; CHECK-NEXT: pushl $_methodWithVtorDisp_thunk |
| ; CHECK-NEXT: calll ___cyg_profile_func_exit |
| ; CHECK-NEXT: addl $8, %esp |
| ; CHECK-NEXT: movl %esi, %ecx |
| ; CHECK-NEXT: popl %esi |
| ; CHECK-NEXT: jmp _methodWithVtorDisp # TAILCALL |
| %3 = getelementptr inbounds i8, i8* %0, i32 -4 |
| %4 = bitcast i8* %3 to i32* |
| %5 = load i32, i32* %4, align 4 |
| %6 = sub i32 0, %5 |
| %7 = getelementptr i8, i8* %0, i32 %6 |
| musttail call x86_thiscallcc void @methodWithVtorDisp(i8* %7, <{ %struct.Args }>* inalloca nonnull %1) |
| ret void |
| } |
| |
| attributes #0 = { nounwind optsize "instrument-function-exit-inlined"="__cyg_profile_func_exit" } |