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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefixes=LINUX
; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s --check-prefixes=WIN
; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s --check-prefixes=LINUX
define i32 @test1(i32 %x) nounwind {
; LINUX-LABEL: test1:
; LINUX: # %bb.0:
; LINUX-NEXT: # kill: def $edi killed $edi def $rdi
; LINUX-NEXT: leal 7(,%rdi,8), %eax
; LINUX-NEXT: retq
;
; WIN-LABEL: test1:
; WIN: # %bb.0:
; WIN-NEXT: # kill: def $ecx killed $ecx def $rcx
; WIN-NEXT: leal 7(,%rcx,8), %eax
; WIN-NEXT: retq
%tmp1 = shl i32 %x, 3
%tmp2 = add i32 %tmp1, 7
ret i32 %tmp2
}
; ISel the add of -4 with a neg and use an lea for the rest of the
; arithmetic.
define i32 @test2(i32 %x_offs) nounwind readnone {
; LINUX-LABEL: test2:
; LINUX: # %bb.0: # %entry
; LINUX-NEXT: # kill: def $edi killed $edi def $rdi
; LINUX-NEXT: cmpl $5, %edi
; LINUX-NEXT: jl .LBB1_2
; LINUX-NEXT: # %bb.1: # %bb.nph
; LINUX-NEXT: leal -5(%rdi), %eax
; LINUX-NEXT: andl $-4, %eax
; LINUX-NEXT: negl %eax
; LINUX-NEXT: leal -4(%rdi,%rax), %eax
; LINUX-NEXT: retq
; LINUX-NEXT: .LBB1_2: # %bb2
; LINUX-NEXT: movl %edi, %eax
; LINUX-NEXT: retq
;
; WIN-LABEL: test2:
; WIN: # %bb.0: # %entry
; WIN-NEXT: # kill: def $ecx killed $ecx def $rcx
; WIN-NEXT: cmpl $5, %ecx
; WIN-NEXT: jl .LBB1_2
; WIN-NEXT: # %bb.1: # %bb.nph
; WIN-NEXT: leal -5(%rcx), %eax
; WIN-NEXT: andl $-4, %eax
; WIN-NEXT: negl %eax
; WIN-NEXT: leal -4(%rcx,%rax), %eax
; WIN-NEXT: retq
; WIN-NEXT: .LBB1_2: # %bb2
; WIN-NEXT: movl %ecx, %eax
; WIN-NEXT: retq
entry:
%t0 = icmp sgt i32 %x_offs, 4
br i1 %t0, label %bb.nph, label %bb2
bb.nph:
%tmp = add i32 %x_offs, -5
%tmp6 = lshr i32 %tmp, 2
%tmp7 = mul i32 %tmp6, -4
%tmp8 = add i32 %tmp7, %x_offs
%tmp9 = add i32 %tmp8, -4
ret i32 %tmp9
bb2:
ret i32 %x_offs
}
|
