| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -relocation-model=pic -post-RA-scheduler=1 -break-anti-dependencies=critical | FileCheck %s |
| |
| ; PR20308 ( http://llvm.org/bugs/show_bug.cgi?id=20308 ). |
| ; The critical-anti-dependency-breaker must not use register def information from a kill inst. |
| ; This test case expects such an instruction to appear as a comment with def info for RDI. |
| ; There is an anti-dependency (WAR) hazard using RAX using default reg allocation and scheduling. |
| ; The post-RA-scheduler and critical-anti-dependency breaker can eliminate that hazard using R10. |
| ; That is the first free register that isn't used as a param in the call to "@Image". |
| |
| @PartClass = external global i32 |
| @NullToken = external global i64 |
| |
| define i32 @Part_Create(ptr %Anchor, i32 %TypeNum, i32 %F, i32 %Z, ptr %Status, ptr %PartTkn) { |
| ; CHECK-LABEL: Part_Create: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: pushq %rbp |
| ; CHECK-NEXT: .cfi_def_cfa_offset 16 |
| ; CHECK-NEXT: pushq %rbx |
| ; CHECK-NEXT: .cfi_def_cfa_offset 24 |
| ; CHECK-NEXT: subq $24, %rsp |
| ; CHECK-NEXT: .cfi_def_cfa_offset 48 |
| ; CHECK-NEXT: .cfi_offset %rbx, -24 |
| ; CHECK-NEXT: .cfi_offset %rbp, -16 |
| ; CHECK-NEXT: movq NullToken@GOTPCREL(%rip), %rax |
| ; CHECK-NEXT: movq PartClass@GOTPCREL(%rip), %r10 |
| ; CHECK-NEXT: xorl %edx, %edx |
| ; CHECK-NEXT: xorl %ecx, %ecx |
| ; CHECK-NEXT: movq %rdi, %rbx |
| ; CHECK-NEXT: movq (%rax), %rax |
| ; CHECK-NEXT: movl (%r10), %ebp |
| ; CHECK-NEXT: movq %rax, {{[0-9]+}}(%rsp) |
| ; CHECK-NEXT: leaq {{[0-9]+}}(%rsp), %rax |
| ; CHECK-NEXT: movl %ebp, %esi |
| ; CHECK-NEXT: movq %rax, (%rsp) |
| ; CHECK-NEXT: callq Image@PLT |
| ; CHECK-NEXT: movq %rbx, %rdi |
| ; CHECK-NEXT: callq Create@PLT |
| ; CHECK-NEXT: movl %ebp, %eax |
| ; CHECK-NEXT: addq $24, %rsp |
| ; CHECK-NEXT: .cfi_def_cfa_offset 24 |
| ; CHECK-NEXT: popq %rbx |
| ; CHECK-NEXT: .cfi_def_cfa_offset 16 |
| ; CHECK-NEXT: popq %rbp |
| ; CHECK-NEXT: .cfi_def_cfa_offset 8 |
| ; CHECK-NEXT: retq |
| %PartObj = alloca ptr, align 8 |
| %Vchunk = alloca i64, align 8 |
| %1 = load i64, ptr @NullToken, align 4 |
| store i64 %1, ptr %Vchunk, align 8 |
| %2 = load i32, ptr @PartClass, align 4 |
| call i32 @Image(ptr %Anchor, i32 %2, i32 0, i32 0, ptr %Status, ptr %PartTkn, ptr %PartObj) |
| call i32 @Create(ptr %Anchor) |
| ret i32 %2 |
| } |
| |
| declare i32 @Image(ptr, i32, i32, i32, ptr, ptr, ptr) |
| declare i32 @Create(ptr) |