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; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s
%struct.A = type { i8 }
%struct.B = type { i32 }
%struct.C = type { %struct.B }
%struct.D = type { %struct.B }
%struct.E = type { %struct.B }
declare ptr @A_ctor(ptr returned)
declare ptr @B_ctor(ptr returned, i32)
declare ptr @A_ctor_nothisret(ptr)
declare ptr @B_ctor_nothisret(ptr, i32)
define ptr @C_ctor(ptr %this, i32 %y) {
entry:
; CHECK-LABEL: C_ctor:
; CHECK: jmp B_ctor # TAILCALL
%call = tail call ptr @B_ctor(ptr %this, i32 %y)
ret ptr %this
}
define ptr @C_ctor_nothisret(ptr %this, i32 %y) {
entry:
; CHECK-LABEL: C_ctor_nothisret:
; CHECK-NOT: jmp B_ctor_nothisret
%call = tail call ptr @B_ctor_nothisret(ptr %this, i32 %y)
ret ptr %this
}
define ptr @D_ctor(ptr %this, i32 %y) {
entry:
; CHECK-LABEL: D_ctor:
; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]]
; CHECK: callq A_ctor
; CHECK: movq [[SAVETHIS]], %rcx
; CHECK: jmp B_ctor # TAILCALL
%call = tail call ptr @A_ctor(ptr %this)
%call2 = tail call ptr @B_ctor(ptr %this, i32 %y)
; (this next line would never be generated by Clang, actually)
ret ptr %call
}
define ptr @D_ctor_nothisret(ptr %this, i32 %y) {
entry:
; CHECK-LABEL: D_ctor_nothisret:
; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]]
; CHECK: callq A_ctor_nothisret
; CHECK: movq [[SAVETHIS]], %rcx
; CHECK-NOT: jmp B_ctor_nothisret
%call = tail call ptr @A_ctor_nothisret(ptr %this)
%call2 = tail call ptr @B_ctor_nothisret(ptr %this, i32 %y)
; (this next line would never be generated by Clang, actually)
ret ptr %call
}
define ptr @E_ctor(ptr %this, i32 %x) {
entry:
; CHECK-LABEL: E_ctor:
; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]]
; CHECK: callq B_ctor
; CHECK: movq [[SAVETHIS]], %rcx
; CHECK: jmp B_ctor # TAILCALL
%call = tail call ptr @B_ctor(ptr %this, i32 %x)
%call4 = tail call ptr @B_ctor(ptr %this, i32 %x)
ret ptr %this
}
define ptr @E_ctor_nothisret(ptr %this, i32 %x) {
entry:
; CHECK-LABEL: E_ctor_nothisret:
; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]]
; CHECK: callq B_ctor_nothisret
; CHECK: movq [[SAVETHIS]], %rcx
; CHECK-NOT: jmp B_ctor_nothisret
%call = tail call ptr @B_ctor_nothisret(ptr %this, i32 %x)
%call4 = tail call ptr @B_ctor_nothisret(ptr %this, i32 %x)
ret ptr %this
}
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