| # RUN: llc %s -emit-call-site-info -run-pass=block-placement -tail-dup-placement-threshold=4 -o - | FileCheck %s |
| # |
| # Test case adapted from test/CodeGen/X86/taildup-heapallocsite.ll. |
| |
| # CHECK-LABEL: callSites: |
| # CHECK-NEXT: - { bb: 1, offset: 1, fwdArgRegs: |
| # CHECK-NEXT: - { arg: 0, reg: '$rcx' } } |
| # CHECK-NEXT: - { bb: 2, offset: 1, fwdArgRegs: |
| # CHECK-NEXT: - { arg: 0, reg: '$rcx' } } |
| |
| --- | |
| target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-windows-msvc19.22.27905" |
| |
| define dso_local void @taildupit(i32* readonly %size_ptr) { |
| entry: |
| %tobool = icmp eq i32* %size_ptr, null |
| br i1 %tobool, label %cond.end, label %cond.true |
| |
| cond.true: ; preds = %entry |
| %0 = load i32, i32* %size_ptr, align 4 |
| br label %cond.end |
| |
| cond.end: ; preds = %cond.true, %entry |
| %cond = phi i32 [ %0, %cond.true ], [ 1, %entry ] |
| %call = tail call i8* @alloc(i32 %cond) |
| tail call void @f2() |
| ret void |
| } |
| |
| declare dso_local i8* @alloc(i32) |
| |
| declare dso_local void @f2() |
| |
| ... |
| --- |
| name: taildupit |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$rcx', virtual-reg: '' } |
| callSites: |
| - { bb: 3, offset: 0, fwdArgRegs: |
| - { arg: 0, reg: '$rcx' } } |
| body: | |
| bb.0.entry: |
| successors: %bb.1(0x30000000), %bb.2(0x50000000) |
| liveins: $rcx |
| |
| $rsp = frame-setup SUB64ri8 $rsp, 40, implicit-def dead $eflags |
| frame-setup SEH_StackAlloc 40 |
| frame-setup SEH_EndPrologue |
| TEST64rr renamable $rcx, renamable $rcx, implicit-def $eflags |
| JCC_1 %bb.2, 5, implicit killed $eflags |
| |
| bb.1: |
| successors: %bb.3(0x80000000) |
| |
| renamable $ecx = MOV32ri 1 |
| JMP_1 %bb.3 |
| |
| bb.2.cond.true: |
| successors: %bb.3(0x80000000) |
| liveins: $rcx |
| |
| renamable $ecx = MOV32rm killed renamable $rcx, 1, $noreg, 0, $noreg :: (load (s32) from %ir.size_ptr) |
| |
| bb.3.cond.end: |
| liveins: $ecx |
| |
| CALL64pcrel32 @alloc, csr_win64, implicit $rsp, implicit $ssp, implicit $ecx, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax |
| SEH_Epilogue |
| $rsp = frame-destroy ADD64ri8 $rsp, 40, implicit-def dead $eflags |
| TAILJMPd64 @f2, csr_win64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp |
| |
| ... |