; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown < %s | FileCheck %s --implicit-check-not="jmp.*\*" --implicit-check-not="call.*\*" --check-prefix=X64
; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown -O0 < %s | FileCheck %s --implicit-check-not="jmp.*\*" --implicit-check-not="call.*\*" --check-prefix=X64FAST
; RUN: llc -verify-machineinstrs -mtriple=i686-unknown < %s | FileCheck %s --implicit-check-not="jmp.*\*" --implicit-check-not="call.*\*" --check-prefix=X86
; RUN: llc -verify-machineinstrs -mtriple=i686-unknown -O0 < %s | FileCheck %s --implicit-check-not="jmp.*\*" --implicit-check-not="call.*\*" --check-prefix=X86FAST
declare dso_local void @bar(i32)
; Test a simple indirect call and tail call.
define void @icall_reg(ptr %fp, i32 %x) #0 {
entry:
tail call void @bar(i32 %x)
tail call void %fp(i32 %x)
tail call void @bar(i32 %x)
tail call void %fp(i32 %x)
ret void
}
; X64-LABEL: icall_reg:
; X64-DAG: movq %rdi, %[[fp:[^ ]*]]
; X64-DAG: movl %esi, %[[x:[^ ]*]]
; X64: movl %esi, %edi
; X64: callq bar
; X64-DAG: movl %[[x]], %edi
; X64-DAG: movq %[[fp]], %r11
; X64: callq __x86_indirect_thunk_r11
; X64: movl %[[x]], %edi
; X64: callq bar
; X64-DAG: movl %[[x]], %edi
; X64-DAG: movq %[[fp]], %r11
; X64: jmp __x86_indirect_thunk_r11 # TAILCALL
; X64FAST-LABEL: icall_reg:
; X64FAST: callq bar
; X64FAST: callq __x86_indirect_thunk_r11
; X64FAST: callq bar
; X64FAST: jmp __x86_indirect_thunk_r11 # TAILCALL
; X86-LABEL: icall_reg:
; X86-DAG: movl 12(%esp), %[[fp:[^ ]*]]
; X86-DAG: movl 16(%esp), %[[x:[^ ]*]]
; X86: pushl %[[x]]
; X86: calll bar
; X86: movl %[[fp]], %eax
; X86: pushl %[[x]]
; X86: calll __x86_indirect_thunk_eax
; X86: pushl %[[x]]
; X86: calll bar
; X86: movl %[[fp]], %eax
; X86: pushl %[[x]]
; X86: calll __x86_indirect_thunk_eax
; X86-NOT: # TAILCALL
; X86FAST-LABEL: icall_reg:
; X86FAST: calll bar
; X86FAST: calll __x86_indirect_thunk_eax
; X86FAST: calll bar
; X86FAST: calll __x86_indirect_thunk_eax
@global_fp = external dso_local global ptr
; Test an indirect call through a global variable.
define void @icall_global_fp(i32 %x, ptr %fpp) #0 {
%fp1 = load ptr, ptr @global_fp
call void %fp1(i32 %x)
%fp2 = load ptr, ptr @global_fp
tail call void %fp2(i32 %x)
ret void
}
; X64-LABEL: icall_global_fp:
; X64-DAG: movl %edi, %[[x:[^ ]*]]
; X64-DAG: movq global_fp(%rip), %r11
; X64: callq __x86_indirect_thunk_r11
; X64-DAG: movl %[[x]], %edi
; X64-DAG: movq global_fp(%rip), %r11
; X64: jmp __x86_indirect_thunk_r11 # TAILCALL
; X64FAST-LABEL: icall_global_fp:
; X64FAST: movq global_fp(%rip), %r11
; X64FAST: callq __x86_indirect_thunk_r11
; X64FAST: movq global_fp(%rip), %r11
; X64FAST: jmp __x86_indirect_thunk_r11 # TAILCALL
; X86-LABEL: icall_global_fp:
; X86: movl global_fp, %eax
; X86: pushl 4(%esp)
; X86: calll __x86_indirect_thunk_eax
; X86: addl $4, %esp
; X86: movl global_fp, %eax
; X86: jmp __x86_indirect_thunk_eax # TAILCALL
; X86FAST-LABEL: icall_global_fp:
; X86FAST: calll __x86_indirect_thunk_eax
; X86FAST: jmp __x86_indirect_thunk_eax # TAILCALL
%struct.Foo = type { ptr }
; Test an indirect call through a vtable.
define void @vcall(ptr %obj) #0 {
%vptr = load ptr, ptr %obj
%vslot = getelementptr ptr, ptr %vptr, i32 1
%fp = load ptr, ptr %vslot
tail call void %fp(ptr %obj)
tail call void %fp(ptr %obj)
ret void
}
; X64-LABEL: vcall:
; X64: movq %rdi, %[[obj:[^ ]*]]
; X64: movq (%rdi), %[[vptr:[^ ]*]]
; X64: movq 8(%[[vptr]]), %[[fp:[^ ]*]]
; X64: movq %[[fp]], %r11
; X64: callq __x86_indirect_thunk_r11
; X64-DAG: movq %[[obj]], %rdi
; X64-DAG: movq %[[fp]], %r11
; X64: jmp __x86_indirect_thunk_r11 # TAILCALL
; X64FAST-LABEL: vcall:
; X64FAST: callq __x86_indirect_thunk_r11
; X64FAST: jmp __x86_indirect_thunk_r11 # TAILCALL
; X86-LABEL: vcall:
; X86: movl 8(%esp), %[[obj:[^ ]*]]
; X86: movl (%[[obj]]), %[[vptr:[^ ]*]]
; X86: movl 4(%[[vptr]]), %[[fp:[^ ]*]]
; X86: movl %[[fp]], %eax
; X86: pushl %[[obj]]
; X86: calll __x86_indirect_thunk_eax
; X86: addl $4, %esp
; X86: movl %[[fp]], %eax
; X86: jmp __x86_indirect_thunk_eax # TAILCALL
; X86FAST-LABEL: vcall:
; X86FAST: calll __x86_indirect_thunk_eax
; X86FAST: jmp __x86_indirect_thunk_eax # TAILCALL
declare dso_local void @direct_callee()
define void @direct_tail() #0 {
tail call void @direct_callee()
ret void
}
; X64-LABEL: direct_tail:
; X64: jmp direct_callee # TAILCALL
; X64FAST-LABEL: direct_tail:
; X64FAST: jmp direct_callee # TAILCALL
; X86-LABEL: direct_tail:
; X86: jmp direct_callee # TAILCALL
; X86FAST-LABEL: direct_tail:
; X86FAST: jmp direct_callee # TAILCALL
; Lastly check that no thunks were emitted.
; X64-NOT: __{{.*}}_retpoline_{{.*}}:
; X64FAST-NOT: __{{.*}}_retpoline_{{.*}}:
; X86-NOT: __{{.*}}_retpoline_{{.*}}:
; X86FAST-NOT: __{{.*}}_retpoline_{{.*}}:
attributes #0 = { "target-features"="+retpoline-indirect-calls,+retpoline-external-thunk" }
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