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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
; LSR's OptimizeMax function shouldn't try to eliminate this max, because
; it has three operands.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
define void @foo(ptr nocapture %p, i64 %x, i64 %y) nounwind {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: testq %rdx, %rdx
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: cmovneq %rdx, %rax
; CHECK-NEXT: cmpq %rsi, %rax
; CHECK-NEXT: cmovbeq %rsi, %rax
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: .LBB0_1: # %bb4
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; CHECK-NEXT: addsd %xmm0, %xmm0
; CHECK-NEXT: movsd %xmm0, (%rdi)
; CHECK-NEXT: addq $8, %rdi
; CHECK-NEXT: decq %rax
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: # %bb.2: # %return
; CHECK-NEXT: retq
entry:
%tmp = icmp eq i64 %y, 0 ; <i1> [#uses=1]
%umax = select i1 %tmp, i64 1, i64 %y ; <i64> [#uses=2]
%tmp8 = icmp ugt i64 %umax, %x ; <i1> [#uses=1]
%umax9 = select i1 %tmp8, i64 %umax, i64 %x ; <i64> [#uses=1]
br label %bb4
bb4: ; preds = %bb4, %entry
%i.07 = phi i64 [ 0, %entry ], [ %2, %bb4 ] ; <i64> [#uses=2]
%scevgep = getelementptr double, ptr %p, i64 %i.07 ; <ptr> [#uses=2]
%0 = load double, ptr %scevgep, align 8 ; <double> [#uses=1]
%1 = fmul double %0, 2.000000e+00 ; <double> [#uses=1]
store double %1, ptr %scevgep, align 8
%2 = add i64 %i.07, 1 ; <i64> [#uses=2]
%exitcond = icmp eq i64 %2, %umax9 ; <i1> [#uses=1]
br i1 %exitcond, label %return, label %bb4
return: ; preds = %bb4
ret void
}
|
