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clang-p2996/llvm/test/CodeGen/MIR/X86/basic-block-liveins.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 basic block liveins correctly.
--- |
define i32 @test(i32 %a, i32 %b) {
body:
%c = add i32 %a, %b
ret i32 %c
}
define i32 @test2(i32 %a, i32 %b) {
body:
%c = add i32 %a, %b
ret i32 %c
}
define i32 @test3() {
body:
ret i32 0
}
...
---
name: test
tracksRegLiveness: true
body: |
; CHECK-LABEL: bb.0.body:
; CHECK-NEXT: liveins: $edi, $esi
bb.0.body:
liveins: $edi, $esi
$eax = LEA64_32r killed $rdi, 1, killed $rsi, 0, _
RET64 $eax
...
---
name: test2
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: test2
; Verify that we can have multiple lists of liveins that will be merged into
; one.
; CHECK: bb.0.body:
; CHECK-NEXT: liveins: $edi, $esi
bb.0.body:
liveins: $edi
liveins: $esi
$eax = LEA64_32r killed $rdi, 1, killed $rsi, 0, _
RET64 $eax
...
---
name: test3
tracksRegLiveness: true
body: |
; Verify that we can have an empty list of liveins.
; CHECK-LABEL: name: test3
; CHECK: bb.0.body:
; CHECK-NEXT: $eax = MOV32r0 implicit-def dead $eflags
bb.0.body:
liveins:
$eax = MOV32r0 implicit-def dead $eflags
RET64 killed $eax
...