| ; 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 |
| } |