| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -verify-machineinstrs < %s -enable-tail-merge=0 -mtriple=x86_64-linux | FileCheck %s --check-prefix=LINUX |
| ; RUN: llc -verify-machineinstrs < %s -enable-tail-merge=0 -mtriple=x86_64-linux-gnux32 | FileCheck %s --check-prefix=LINUX-X32 |
| ; RUN: llc -verify-machineinstrs < %s -enable-tail-merge=0 -mtriple=x86_64-windows | FileCheck %s --check-prefix=WINDOWS |
| ; RUN: llc -verify-machineinstrs < %s -enable-tail-merge=0 -mtriple=i686-windows | FileCheck %s --check-prefix=X86 --check-prefix=X86-NOSSE |
| ; RUN: llc -verify-machineinstrs < %s -enable-tail-merge=0 -mtriple=i686-windows -mattr=+sse2 | FileCheck %s --check-prefix=X86 --check-prefix=X86-SSE |
| |
| ; Test that we actually spill and reload all arguments in the variadic argument |
| ; pack. Doing a normal call will clobber all argument registers, and we will |
| ; spill around it. A simple adjustment should not require any XMM spills. |
| |
| declare void @llvm.va_start(i8*) nounwind |
| |
| declare void(i8*, ...)* @get_f(i8* %this) |
| |
| define void @f_thunk(i8* %this, ...) { |
| ; Use va_start so that we exercise the combination. |
| ; LINUX-LABEL: f_thunk: |
| ; LINUX: # %bb.0: |
| ; LINUX-NEXT: pushq %rbp |
| ; LINUX-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-NEXT: pushq %r15 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 24 |
| ; LINUX-NEXT: pushq %r14 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 32 |
| ; LINUX-NEXT: pushq %r13 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 40 |
| ; LINUX-NEXT: pushq %r12 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 48 |
| ; LINUX-NEXT: pushq %rbx |
| ; LINUX-NEXT: .cfi_def_cfa_offset 56 |
| ; LINUX-NEXT: subq $360, %rsp # imm = 0x168 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 416 |
| ; LINUX-NEXT: .cfi_offset %rbx, -56 |
| ; LINUX-NEXT: .cfi_offset %r12, -48 |
| ; LINUX-NEXT: .cfi_offset %r13, -40 |
| ; LINUX-NEXT: .cfi_offset %r14, -32 |
| ; LINUX-NEXT: .cfi_offset %r15, -24 |
| ; LINUX-NEXT: .cfi_offset %rbp, -16 |
| ; LINUX-NEXT: movq %r9, %r15 |
| ; LINUX-NEXT: movq %r8, %r12 |
| ; LINUX-NEXT: movq %rcx, %r13 |
| ; LINUX-NEXT: movq %rdx, %rbp |
| ; LINUX-NEXT: movq %rsi, %rbx |
| ; LINUX-NEXT: movq %rdi, %r14 |
| ; LINUX-NEXT: movb %al, {{[-0-9]+}}(%r{{[sb]}}p) # 1-byte Spill |
| ; LINUX-NEXT: testb %al, %al |
| ; LINUX-NEXT: je .LBB0_2 |
| ; LINUX-NEXT: # %bb.1: |
| ; LINUX-NEXT: movaps %xmm0, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm1, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm2, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm3, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm4, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm5, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm6, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movaps %xmm7, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: .LBB0_2: |
| ; LINUX-NEXT: movq %rbx, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movq %rbp, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movq %r13, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movq %r12, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movq %r15, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: leaq {{[0-9]+}}(%rsp), %rax |
| ; LINUX-NEXT: movq %rax, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: leaq {{[0-9]+}}(%rsp), %rax |
| ; LINUX-NEXT: movq %rax, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movabsq $206158430216, %rax # imm = 0x3000000008 |
| ; LINUX-NEXT: movq %rax, {{[0-9]+}}(%rsp) |
| ; LINUX-NEXT: movq %r14, %rdi |
| ; LINUX-NEXT: movaps %xmm7, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm6, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm5, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm4, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm3, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm2, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm1, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: movaps %xmm0, {{[-0-9]+}}(%r{{[sb]}}p) # 16-byte Spill |
| ; LINUX-NEXT: callq get_f |
| ; LINUX-NEXT: movq %rax, %r11 |
| ; LINUX-NEXT: movq %r14, %rdi |
| ; LINUX-NEXT: movq %rbx, %rsi |
| ; LINUX-NEXT: movq %rbp, %rdx |
| ; LINUX-NEXT: movq %r13, %rcx |
| ; LINUX-NEXT: movq %r12, %r8 |
| ; LINUX-NEXT: movq %r15, %r9 |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm0 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm1 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm2 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm3 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm4 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm5 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm6 # 16-byte Reload |
| ; LINUX-NEXT: movaps {{[-0-9]+}}(%r{{[sb]}}p), %xmm7 # 16-byte Reload |
| ; LINUX-NEXT: movb {{[-0-9]+}}(%r{{[sb]}}p), %al # 1-byte Reload |
| ; LINUX-NEXT: addq $360, %rsp # imm = 0x168 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 56 |
| ; LINUX-NEXT: popq %rbx |
| ; LINUX-NEXT: .cfi_def_cfa_offset 48 |
| ; LINUX-NEXT: popq %r12 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 40 |
| ; LINUX-NEXT: popq %r13 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 32 |
| ; LINUX-NEXT: popq %r14 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 24 |
| ; LINUX-NEXT: popq %r15 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-NEXT: popq %rbp |
| ; LINUX-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-NEXT: jmpq *%r11 # TAILCALL |
| ; |
| ; LINUX-X32-LABEL: f_thunk: |
| ; LINUX-X32: # %bb.0: |
| ; LINUX-X32-NEXT: pushq %rbp |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-X32-NEXT: pushq %r15 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 24 |
| ; LINUX-X32-NEXT: pushq %r14 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 32 |
| ; LINUX-X32-NEXT: pushq %r13 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 40 |
| ; LINUX-X32-NEXT: pushq %r12 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 48 |
| ; LINUX-X32-NEXT: pushq %rbx |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 56 |
| ; LINUX-X32-NEXT: subl $344, %esp # imm = 0x158 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 400 |
| ; LINUX-X32-NEXT: .cfi_offset %rbx, -56 |
| ; LINUX-X32-NEXT: .cfi_offset %r12, -48 |
| ; LINUX-X32-NEXT: .cfi_offset %r13, -40 |
| ; LINUX-X32-NEXT: .cfi_offset %r14, -32 |
| ; LINUX-X32-NEXT: .cfi_offset %r15, -24 |
| ; LINUX-X32-NEXT: .cfi_offset %rbp, -16 |
| ; LINUX-X32-NEXT: movq %r9, %r15 |
| ; LINUX-X32-NEXT: movq %r8, %r12 |
| ; LINUX-X32-NEXT: movq %rcx, %r13 |
| ; LINUX-X32-NEXT: movq %rdx, %rbp |
| ; LINUX-X32-NEXT: movq %rsi, %rbx |
| ; LINUX-X32-NEXT: movl %edi, %r14d |
| ; LINUX-X32-NEXT: movb %al, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Spill |
| ; LINUX-X32-NEXT: testb %al, %al |
| ; LINUX-X32-NEXT: je .LBB0_2 |
| ; LINUX-X32-NEXT: # %bb.1: |
| ; LINUX-X32-NEXT: movaps %xmm0, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm1, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm2, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm3, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm4, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm5, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm6, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movaps %xmm7, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: .LBB0_2: |
| ; LINUX-X32-NEXT: movq %rbx, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movq %rbp, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movq %r13, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movq %r12, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movq %r15, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: leal {{[0-9]+}}(%rsp), %eax |
| ; LINUX-X32-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: leal {{[0-9]+}}(%rsp), %eax |
| ; LINUX-X32-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movabsq $206158430216, %rax # imm = 0x3000000008 |
| ; LINUX-X32-NEXT: movq %rax, {{[0-9]+}}(%esp) |
| ; LINUX-X32-NEXT: movl %r14d, %edi |
| ; LINUX-X32-NEXT: movaps %xmm7, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm6, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm5, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm4, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm3, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm2, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm1, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: movaps %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; LINUX-X32-NEXT: callq get_f |
| ; LINUX-X32-NEXT: movl %eax, %r11d |
| ; LINUX-X32-NEXT: movl %r14d, %edi |
| ; LINUX-X32-NEXT: movq %rbx, %rsi |
| ; LINUX-X32-NEXT: movq %rbp, %rdx |
| ; LINUX-X32-NEXT: movq %r13, %rcx |
| ; LINUX-X32-NEXT: movq %r12, %r8 |
| ; LINUX-X32-NEXT: movq %r15, %r9 |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm2 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm3 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm4 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm5 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm6 # 16-byte Reload |
| ; LINUX-X32-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm7 # 16-byte Reload |
| ; LINUX-X32-NEXT: movb {{[-0-9]+}}(%e{{[sb]}}p), %al # 1-byte Reload |
| ; LINUX-X32-NEXT: addl $344, %esp # imm = 0x158 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 56 |
| ; LINUX-X32-NEXT: popq %rbx |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 48 |
| ; LINUX-X32-NEXT: popq %r12 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 40 |
| ; LINUX-X32-NEXT: popq %r13 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 32 |
| ; LINUX-X32-NEXT: popq %r14 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 24 |
| ; LINUX-X32-NEXT: popq %r15 |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-X32-NEXT: popq %rbp |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-X32-NEXT: jmpq *%r11 # TAILCALL |
| ; |
| ; WINDOWS-LABEL: f_thunk: |
| ; WINDOWS: # %bb.0: |
| ; WINDOWS-NEXT: pushq %r14 |
| ; WINDOWS-NEXT: .seh_pushreg 14 |
| ; WINDOWS-NEXT: pushq %rsi |
| ; WINDOWS-NEXT: .seh_pushreg 6 |
| ; WINDOWS-NEXT: pushq %rdi |
| ; WINDOWS-NEXT: .seh_pushreg 7 |
| ; WINDOWS-NEXT: pushq %rbp |
| ; WINDOWS-NEXT: .seh_pushreg 5 |
| ; WINDOWS-NEXT: pushq %rbx |
| ; WINDOWS-NEXT: .seh_pushreg 3 |
| ; WINDOWS-NEXT: subq $64, %rsp |
| ; WINDOWS-NEXT: .seh_stackalloc 64 |
| ; WINDOWS-NEXT: .seh_endprologue |
| ; WINDOWS-NEXT: movl %eax, %r14d |
| ; WINDOWS-NEXT: movq %r9, %rsi |
| ; WINDOWS-NEXT: movq %r8, %rdi |
| ; WINDOWS-NEXT: movq %rdx, %rbx |
| ; WINDOWS-NEXT: movq %rcx, %rbp |
| ; WINDOWS-NEXT: movq %rdx, {{[0-9]+}}(%rsp) |
| ; WINDOWS-NEXT: movq %r8, {{[0-9]+}}(%rsp) |
| ; WINDOWS-NEXT: movq %r9, {{[0-9]+}}(%rsp) |
| ; WINDOWS-NEXT: leaq {{[0-9]+}}(%rsp), %rax |
| ; WINDOWS-NEXT: movq %rax, {{[0-9]+}}(%rsp) |
| ; WINDOWS-NEXT: callq get_f |
| ; WINDOWS-NEXT: movq %rax, %r10 |
| ; WINDOWS-NEXT: movq %rbp, %rcx |
| ; WINDOWS-NEXT: movq %rbx, %rdx |
| ; WINDOWS-NEXT: movq %rdi, %r8 |
| ; WINDOWS-NEXT: movq %rsi, %r9 |
| ; WINDOWS-NEXT: movl %r14d, %eax |
| ; WINDOWS-NEXT: addq $64, %rsp |
| ; WINDOWS-NEXT: popq %rbx |
| ; WINDOWS-NEXT: popq %rbp |
| ; WINDOWS-NEXT: popq %rdi |
| ; WINDOWS-NEXT: popq %rsi |
| ; WINDOWS-NEXT: popq %r14 |
| ; WINDOWS-NEXT: rex64 jmpq *%r10 # TAILCALL |
| ; WINDOWS-NEXT: .seh_handlerdata |
| ; WINDOWS-NEXT: .text |
| ; WINDOWS-NEXT: .seh_endproc |
| ; |
| ; X86-NOSSE-LABEL: f_thunk: |
| ; X86-NOSSE: # %bb.0: |
| ; X86-NOSSE-NEXT: pushl %ebp |
| ; X86-NOSSE-NEXT: movl %esp, %ebp |
| ; X86-NOSSE-NEXT: pushl %esi |
| ; X86-NOSSE-NEXT: andl $-16, %esp |
| ; X86-NOSSE-NEXT: subl $48, %esp |
| ; X86-NOSSE-NEXT: movl 8(%ebp), %esi |
| ; X86-NOSSE-NEXT: leal 12(%ebp), %eax |
| ; X86-NOSSE-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; X86-NOSSE-NEXT: movl %esi, (%esp) |
| ; X86-NOSSE-NEXT: calll _get_f |
| ; X86-NOSSE-NEXT: movl %esi, 8(%ebp) |
| ; X86-NOSSE-NEXT: leal -4(%ebp), %esp |
| ; X86-NOSSE-NEXT: popl %esi |
| ; X86-NOSSE-NEXT: popl %ebp |
| ; X86-NOSSE-NEXT: jmpl *%eax # TAILCALL |
| ; |
| ; X86-SSE-LABEL: f_thunk: |
| ; X86-SSE: # %bb.0: |
| ; X86-SSE-NEXT: pushl %ebp |
| ; X86-SSE-NEXT: movl %esp, %ebp |
| ; X86-SSE-NEXT: pushl %esi |
| ; X86-SSE-NEXT: andl $-16, %esp |
| ; X86-SSE-NEXT: subl $96, %esp |
| ; X86-SSE-NEXT: movaps %xmm2, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; X86-SSE-NEXT: movaps %xmm1, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; X86-SSE-NEXT: movaps %xmm0, {{[-0-9]+}}(%e{{[sb]}}p) # 16-byte Spill |
| ; X86-SSE-NEXT: movl 8(%ebp), %esi |
| ; X86-SSE-NEXT: leal 12(%ebp), %eax |
| ; X86-SSE-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; X86-SSE-NEXT: movl %esi, (%esp) |
| ; X86-SSE-NEXT: calll _get_f |
| ; X86-SSE-NEXT: movl %esi, 8(%ebp) |
| ; X86-SSE-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm0 # 16-byte Reload |
| ; X86-SSE-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm1 # 16-byte Reload |
| ; X86-SSE-NEXT: movaps {{[-0-9]+}}(%e{{[sb]}}p), %xmm2 # 16-byte Reload |
| ; X86-SSE-NEXT: leal -4(%ebp), %esp |
| ; X86-SSE-NEXT: popl %esi |
| ; X86-SSE-NEXT: popl %ebp |
| ; X86-SSE-NEXT: jmpl *%eax # TAILCALL |
| %ap = alloca [4 x i8*], align 16 |
| %ap_i8 = bitcast [4 x i8*]* %ap to i8* |
| call void @llvm.va_start(i8* %ap_i8) |
| |
| %fptr = call void(i8*, ...)*(i8*) @get_f(i8* %this) |
| musttail call void (i8*, ...) %fptr(i8* %this, ...) |
| ret void |
| } |
| |
| ; Save and restore 6 GPRs, 8 XMMs, and AL around the call. |
| |
| ; No regparms on normal x86 conventions. |
| |
| ; This thunk shouldn't require any spills and reloads, assuming the register |
| ; allocator knows what it's doing. |
| |
| define void @g_thunk(i8* %fptr_i8, ...) { |
| ; LINUX-LABEL: g_thunk: |
| ; LINUX: # %bb.0: |
| ; LINUX-NEXT: pushq %rax |
| ; LINUX-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-NEXT: popq %r11 |
| ; LINUX-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-NEXT: jmpq *%rdi # TAILCALL |
| ; |
| ; LINUX-X32-LABEL: g_thunk: |
| ; LINUX-X32: # %bb.0: |
| ; LINUX-X32-NEXT: pushq %rax |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-X32-NEXT: movl %edi, %r11d |
| ; LINUX-X32-NEXT: addl $8, %esp |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-X32-NEXT: jmpq *%r11 # TAILCALL |
| ; |
| ; WINDOWS-LABEL: g_thunk: |
| ; WINDOWS: # %bb.0: |
| ; WINDOWS-NEXT: subq $40, %rsp |
| ; WINDOWS-NEXT: .seh_stackalloc 40 |
| ; WINDOWS-NEXT: .seh_endprologue |
| ; WINDOWS-NEXT: addq $40, %rsp |
| ; WINDOWS-NEXT: rex64 jmpq *%rcx # TAILCALL |
| ; WINDOWS-NEXT: .seh_handlerdata |
| ; WINDOWS-NEXT: .text |
| ; WINDOWS-NEXT: .seh_endproc |
| ; |
| ; X86-LABEL: g_thunk: |
| ; X86: # %bb.0: |
| ; X86-NEXT: pushl %eax |
| ; X86-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; X86-NEXT: popl %ecx |
| ; X86-NEXT: jmpl *%eax # TAILCALL |
| %fptr = bitcast i8* %fptr_i8 to void (i8*, ...)* |
| musttail call void (i8*, ...) %fptr(i8* %fptr_i8, ...) |
| ret void |
| } |
| |
| ; Do a simple multi-exit multi-bb test. |
| |
| %struct.Foo = type { i1, i8*, i8* } |
| |
| @g = external global i32 |
| |
| define void @h_thunk(%struct.Foo* %this, ...) { |
| ; LINUX-LABEL: h_thunk: |
| ; LINUX: # %bb.0: |
| ; LINUX-NEXT: pushq %rax |
| ; LINUX-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-NEXT: cmpb $1, (%rdi) |
| ; LINUX-NEXT: jne .LBB2_2 |
| ; LINUX-NEXT: # %bb.1: # %then |
| ; LINUX-NEXT: movq 8(%rdi), %r11 |
| ; LINUX-NEXT: addq $8, %rsp |
| ; LINUX-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-NEXT: jmpq *%r11 # TAILCALL |
| ; LINUX-NEXT: .LBB2_2: # %else |
| ; LINUX-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-NEXT: movq 16(%rdi), %r11 |
| ; LINUX-NEXT: movl $42, {{.*}}(%rip) |
| ; LINUX-NEXT: addq $8, %rsp |
| ; LINUX-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-NEXT: jmpq *%r11 # TAILCALL |
| ; |
| ; LINUX-X32-LABEL: h_thunk: |
| ; LINUX-X32: # %bb.0: |
| ; LINUX-X32-NEXT: pushq %rax |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-X32-NEXT: cmpb $1, (%edi) |
| ; LINUX-X32-NEXT: jne .LBB2_2 |
| ; LINUX-X32-NEXT: # %bb.1: # %then |
| ; LINUX-X32-NEXT: movl 4(%edi), %r11d |
| ; LINUX-X32-NEXT: addl $8, %esp |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-X32-NEXT: jmpq *%r11 # TAILCALL |
| ; LINUX-X32-NEXT: .LBB2_2: # %else |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 16 |
| ; LINUX-X32-NEXT: movl 8(%edi), %r11d |
| ; LINUX-X32-NEXT: movl $42, {{.*}}(%rip) |
| ; LINUX-X32-NEXT: addl $8, %esp |
| ; LINUX-X32-NEXT: .cfi_def_cfa_offset 8 |
| ; LINUX-X32-NEXT: jmpq *%r11 # TAILCALL |
| ; |
| ; WINDOWS-LABEL: h_thunk: |
| ; WINDOWS: # %bb.0: |
| ; WINDOWS-NEXT: subq $40, %rsp |
| ; WINDOWS-NEXT: .seh_stackalloc 40 |
| ; WINDOWS-NEXT: .seh_endprologue |
| ; WINDOWS-NEXT: cmpb $1, (%rcx) |
| ; WINDOWS-NEXT: jne .LBB2_2 |
| ; WINDOWS-NEXT: # %bb.1: # %then |
| ; WINDOWS-NEXT: movq 8(%rcx), %r10 |
| ; WINDOWS-NEXT: addq $40, %rsp |
| ; WINDOWS-NEXT: rex64 jmpq *%r10 # TAILCALL |
| ; WINDOWS-NEXT: .LBB2_2: # %else |
| ; WINDOWS-NEXT: movq 16(%rcx), %r10 |
| ; WINDOWS-NEXT: movl $42, {{.*}}(%rip) |
| ; WINDOWS-NEXT: addq $40, %rsp |
| ; WINDOWS-NEXT: rex64 jmpq *%r10 # TAILCALL |
| ; WINDOWS-NEXT: .seh_handlerdata |
| ; WINDOWS-NEXT: .text |
| ; WINDOWS-NEXT: .seh_endproc |
| ; |
| ; X86-LABEL: h_thunk: |
| ; X86: # %bb.0: |
| ; X86-NEXT: pushl %eax |
| ; X86-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: cmpb $1, (%eax) |
| ; X86-NEXT: jne LBB2_2 |
| ; X86-NEXT: # %bb.1: # %then |
| ; X86-NEXT: movl 4(%eax), %ecx |
| ; X86-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; X86-NEXT: popl %eax |
| ; X86-NEXT: jmpl *%ecx # TAILCALL |
| ; X86-NEXT: LBB2_2: # %else |
| ; X86-NEXT: movl 8(%eax), %ecx |
| ; X86-NEXT: movl $42, _g |
| ; X86-NEXT: movl %eax, {{[0-9]+}}(%esp) |
| ; X86-NEXT: popl %eax |
| ; X86-NEXT: jmpl *%ecx # TAILCALL |
| %cond_p = getelementptr %struct.Foo, %struct.Foo* %this, i32 0, i32 0 |
| %cond = load i1, i1* %cond_p |
| br i1 %cond, label %then, label %else |
| |
| then: |
| %a_p = getelementptr %struct.Foo, %struct.Foo* %this, i32 0, i32 1 |
| %a_i8 = load i8*, i8** %a_p |
| %a = bitcast i8* %a_i8 to void (%struct.Foo*, ...)* |
| musttail call void (%struct.Foo*, ...) %a(%struct.Foo* %this, ...) |
| ret void |
| |
| else: |
| %b_p = getelementptr %struct.Foo, %struct.Foo* %this, i32 0, i32 2 |
| %b_i8 = load i8*, i8** %b_p |
| %b = bitcast i8* %b_i8 to void (%struct.Foo*, ...)* |
| store i32 42, i32* @g |
| musttail call void (%struct.Foo*, ...) %b(%struct.Foo* %this, ...) |
| ret void |
| } |
