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comparison test/CodeGen/X86/i486-fence-loop.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 95c75e76d11b
children 803732b1fca8
comparison
equal deleted inserted replaced
84:f3e34b893a5f 95:afa8332a0e37
5 ; cycle could be formed so it tried to use "sub (%eax), [[RHS]]". 5 ; cycle could be formed so it tried to use "sub (%eax), [[RHS]]".
6 6
7 define void @gst_atomic_queue_push(i32* %addr) { 7 define void @gst_atomic_queue_push(i32* %addr) {
8 ; CHECK-LABEL: gst_atomic_queue_push: 8 ; CHECK-LABEL: gst_atomic_queue_push:
9 ; CHECK: movl (%eax), [[LHS:%e[a-z]+]] 9 ; CHECK: movl (%eax), [[LHS:%e[a-z]+]]
10 ; CHECK: lock 10 ; CHECK: lock orl
11 ; CHECK-NEXT: orl
12 ; CHECK: movl (%eax), [[RHS:%e[a-z]+]] 11 ; CHECK: movl (%eax), [[RHS:%e[a-z]+]]
13 ; CHECK: cmpl [[LHS]], [[RHS]] 12 ; CHECK: cmpl [[LHS]], [[RHS]]
14 13
15 entry: 14 entry:
16 br label %while.body 15 br label %while.body
17 16
18 while.body: 17 while.body:
19 %0 = load volatile i32* %addr, align 4 18 %0 = load volatile i32, i32* %addr, align 4
20 fence seq_cst 19 fence seq_cst
21 %1 = load volatile i32* %addr, align 4 20 %1 = load volatile i32, i32* %addr, align 4
22 %cmp = icmp sgt i32 %1, %0 21 %cmp = icmp sgt i32 %1, %0
23 br i1 %cmp, label %while.body, label %if.then 22 br i1 %cmp, label %while.body, label %if.then
24 23
25 if.then: 24 if.then:
26 ret void 25 ret void