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clang-p2996/llvm/test/CodeGen/MIR/X86/cfi-offset.mir
Simon Pilgrim d391e4fe84 [X86] Update RET/LRET instruction to use the same naming convention as IRET (PR36876). NFC
Be more consistent in the naming convention for the various RET instructions to specify in terms of bitwidth.

Helps prevent future scheduler model mismatches like those that were only addressed in D44687.

Differential Revision: https://reviews.llvm.org/D113302
2021-11-07 15:06:54 +00:00

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# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the cfi offset operands
# correctly.
--- |
declare void @foo(i32)
define i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) {
entry:
%add = add nsw i32 %b, %a
%add1 = add nsw i32 %add, %c
%add2 = add nsw i32 %add1, %d
tail call void @foo(i32 %add2)
%add6 = add nsw i32 %add2, %add2
ret i32 %add6
}
...
---
name: test
tracksRegLiveness: true
frameInfo:
stackSize: 8
adjustsStack: true
hasCalls: true
fixedStack:
- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }
body: |
bb.0.entry:
liveins: $ecx, $edi, $edx, $esi, $rbx
PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
; CHECK: CFI_INSTRUCTION offset $rbx, -16
CFI_INSTRUCTION offset $rbx, -16
$ebx = COPY $edi, implicit-def $rbx
$ebx = ADD32rr $ebx, killed $esi, implicit-def dead $eflags
$ebx = ADD32rr $ebx, killed $edx, implicit-def dead $eflags
$ebx = ADD32rr $ebx, killed $ecx, implicit-def dead $eflags
$edi = COPY $ebx
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp
$eax = LEA64_32r killed $rbx, 1, $rbx, 0, _
$rbx = POP64r implicit-def $rsp, implicit $rsp
RET64 $eax
...