| # RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s |
| # This test ensures that the MIR parser parses callee saved information in the |
| # stack objects correctly. |
| |
| --- | |
| |
| define i32 @compute(i32 %a) { |
| body: |
| ret i32 %a |
| } |
| |
| define i32 @func(i32 %a) { |
| entry: |
| %b = alloca i32 |
| store i32 %a, i32* %b |
| br label %check |
| |
| check: |
| %comp = icmp sle i32 %a, 10 |
| br i1 %comp, label %loop, label %exit |
| |
| loop: |
| %c = load i32, i32* %b |
| %d = call i32 @compute(i32 %c) |
| %e = sub i32 %d, 1 |
| store i32 %e, i32* %b |
| br label %check |
| |
| exit: |
| ret i32 0 |
| } |
| |
| ... |
| --- |
| name: compute |
| tracksRegLiveness: true |
| body: | |
| bb.0.body: |
| liveins: %edi |
| |
| %eax = COPY killed %edi |
| RETQ killed %eax |
| ... |
| --- |
| name: func |
| tracksRegLiveness: true |
| frameInfo: |
| stackSize: 24 |
| maxAlignment: 4 |
| adjustsStack: true |
| hasCalls: true |
| # CHECK: fixedStack: |
| # CHECK: callee-saved-register: '%rbx', callee-saved-restored: true } |
| fixedStack: |
| - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '%rbx' } |
| # CHECK: stack: |
| # CHECK-NEXT: - { id: 0 |
| # CHECK: callee-saved-register: '%edi', callee-saved-restored: false |
| stack: |
| - { id: 0, name: b, offset: -20, size: 4, alignment: 4 } |
| - { id: 1, offset: -24, size: 4, alignment: 4, callee-saved-register: '%edi', |
| callee-saved-restored: false } |
| body: | |
| bb.0.entry: |
| successors: %bb.1.check |
| liveins: %edi, %rbx |
| |
| frame-setup PUSH64r killed %rbx, implicit-def %rsp, implicit %rsp |
| %rsp = frame-setup SUB64ri8 %rsp, 16, implicit-def dead %eflags |
| %ebx = COPY %edi |
| MOV32mr %rsp, 1, _, 12, _, %ebx |
| |
| bb.1.check: |
| successors: %bb.2.loop, %bb.3.exit |
| liveins: %ebx |
| |
| CMP32ri8 %ebx, 10, implicit-def %eflags |
| JG_1 %bb.3.exit, implicit killed %eflags |
| JMP_1 %bb.2.loop |
| |
| bb.2.loop: |
| successors: %bb.1.check |
| liveins: %ebx |
| |
| %edi = MOV32rm %rsp, 1, _, 12, _ |
| CALL64pcrel32 @compute, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax |
| %eax = DEC32r killed %eax, implicit-def dead %eflags |
| MOV32mr %rsp, 1, _, 12, _, killed %eax |
| JMP_1 %bb.1.check |
| |
| bb.3.exit: |
| %eax = MOV32r0 implicit-def dead %eflags |
| %rsp = ADD64ri8 %rsp, 16, implicit-def dead %eflags |
| %rbx = POP64r implicit-def %rsp, implicit %rsp |
| RETQ %eax |
| ... |