1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -verify-machineinstrs -O2 < %s | FileCheck %s
;; https://llvm.org/PR47468
;; PHI elimination should place copies BEFORE the inline asm, not
;; after, even if the inline-asm uses as an input the same value as
;; the PHI.
declare void @foo(i8*)
define void @test1(i8* %arg, i8** %mem) nounwind {
; CHECK-LABEL: test1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushq %r14
; CHECK-NEXT: pushq %rbx
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: movq %rsi, %r14
; CHECK-NEXT: .Ltmp0: # Block address taken
; CHECK-NEXT: .LBB0_1: # %loop
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movq (%r14), %rbx
; CHECK-NEXT: callq foo@PLT
; CHECK-NEXT: movq %rbx, %rdi
; CHECK-NEXT: #APP
; CHECK-NEXT: #NO_APP
; CHECK-NEXT: # %bb.2: # %end
; CHECK-NEXT: addq $8, %rsp
; CHECK-NEXT: popq %rbx
; CHECK-NEXT: popq %r14
; CHECK-NEXT: retq
entry:
br label %loop
loop:
%a = phi i8* [ %arg, %entry ], [ %b, %loop ]
%b = load i8*, i8** %mem, align 8
call void @foo(i8* %a)
callbr void asm sideeffect "", "*m,i"(i8* elementtype(i8) %b, i8* blockaddress(@test1, %loop))
to label %end [label %loop]
end:
ret void
}
|
