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|
# TODO(boomanaiden154): Remove this and use gc-empty-basic-blocks.ll directly.
# This should be trivial once we have an asm printer setup for X86 and at least
# a pipeline skeleton.
# RUN: llc %s -mtriple=x86_64 -passes=gc-empty-basic-blocks -o - | FileCheck %s
--- |
define void @foo(i1 zeroext %0) #0 {
br i1 %0, label %2, label %empty_block
2: ; preds = %1
%3 = call i32 @baz()
br label %4
empty_block: ; preds = %1
unreachable
4: ; preds = %2
ret void
}
declare i32 @baz()
attributes #0 = { nounwind }
...
---
name: foo
alignment: 16
body: |
bb.0:
successors: %bb.1(0x40000000), %bb.2(0x40000000)
liveins: $edi
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
$al = MOV8rr $dil, implicit killed $edi
TEST8ri killed renamable $al, 1, implicit-def $eflags
JCC_1 %bb.1, 5, implicit killed $eflags
JMP_1 %bb.2
bb.1:
successors: %bb.3(0x80000000)
CALL64pcrel32 target-flags(x86-plt) @baz, csr_64, implicit $rsp, implicit $ssp, implicit-def $eax
JMP_1 %bb.3
bb.2.empty_block:
successors:
bb.3:
$rax = frame-destroy POP64r implicit-def $rsp, implicit $rsp
RET64
...
# CHECK-NOT: bb.2.empty_block:
|
