source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/ARM/2007-05-07-tailmerge-1.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

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1; RUN: llc < %s -enable-tail-merge | FileCheck %s
2; Check that calls to baz and quux are tail-merged.
3; PR1628
4
5; CHECK: bl _baz
6; CHECK-NOT: bl _baz
7; CHECK: bl _quux
8; CHECK-NOT: bl _quux
9
10; ModuleID = 'tail.c'
11target triple = "arm-apple-darwin8"
12
13define i32 @f(i32 %i, i32 %q) {
14entry:
15        %i_addr = alloca i32            ; <i32*> [#uses=2]
16        %q_addr = alloca i32            ; <i32*> [#uses=2]
17        %retval = alloca i32, align 4           ; <i32*> [#uses=1]
18        store i32 %i, i32* %i_addr
19        store i32 %q, i32* %q_addr
20        %tmp = load i32, i32* %i_addr           ; <i32> [#uses=1]
21        %tmp1 = icmp ne i32 %tmp, 0             ; <i1> [#uses=1]
22        %tmp12 = zext i1 %tmp1 to i8            ; <i8> [#uses=1]
23        %toBool = icmp ne i8 %tmp12, 0          ; <i1> [#uses=1]
24        br i1 %toBool, label %cond_true, label %cond_false
25
26cond_true:              ; preds = %entry
27        %tmp3 = call i32 (...) @bar( )          ; <i32> [#uses=0]
28        %tmp4 = call i32 (...) @baz( i32 5, i32 6 )             ; <i32> [#uses=0]
29        br label %cond_next
30
31cond_false:             ; preds = %entry
32        %tmp5 = call i32 (...) @foo( )          ; <i32> [#uses=0]
33        %tmp6 = call i32 (...) @baz( i32 5, i32 6 )             ; <i32> [#uses=0]
34        br label %cond_next
35
36cond_next:              ; preds = %cond_false, %cond_true
37        %tmp7 = load i32, i32* %q_addr          ; <i32> [#uses=1]
38        %tmp8 = icmp ne i32 %tmp7, 0            ; <i1> [#uses=1]
39        %tmp89 = zext i1 %tmp8 to i8            ; <i8> [#uses=1]
40        %toBool10 = icmp ne i8 %tmp89, 0                ; <i1> [#uses=1]
41        br i1 %toBool10, label %cond_true11, label %cond_false15
42
43cond_true11:            ; preds = %cond_next
44        %tmp13 = call i32 (...) @foo( )         ; <i32> [#uses=0]
45        %tmp14 = call i32 (...) @quux( i32 3, i32 4 )           ; <i32> [#uses=0]
46        br label %cond_next18
47
48cond_false15:           ; preds = %cond_next
49        %tmp16 = call i32 (...) @bar( )         ; <i32> [#uses=0]
50        %tmp17 = call i32 (...) @quux( i32 3, i32 4 )           ; <i32> [#uses=0]
51        br label %cond_next18
52
53cond_next18:            ; preds = %cond_false15, %cond_true11
54        %tmp19 = call i32 (...) @bar( )         ; <i32> [#uses=0]
55        br label %return
56
57return:         ; preds = %cond_next18
58        %retval20 = load i32, i32* %retval              ; <i32> [#uses=1]
59        ret i32 %retval20
60}
61
62declare i32 @bar(...)
63
64declare i32 @baz(...)
65
66declare i32 @foo(...)
67
68declare i32 @quux(...)
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