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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
; RUN: opt < %s -passes=ipsccp -S -o - | FileCheck %s
; The original C source looked like this:
;
; long long a101, b101, e101;
; volatile long c101;
; int d101;
;
; static inline int bar(p1, p2)
; {
; return 0;
; }
;
; void foo(unsigned p1)
; {
; long long *f = &b101, *g = &e101;
; c101 = 0;
; (void)((*f |= a101) - (*g = bar(d101)));
; c101 = (*f |= a101 &= p1) == d101;
; }
;
; When compiled with Clang it gives a warning
; warning: too few arguments in call to 'bar'
;
; This ll reproducer has been reduced to only include tha call.
;
; Note that -lint will report this as UB, but it passes -verify.
; This test is just to verify that we do not crash/assert due to mismatch in
; argument count between the caller and callee.
define dso_local void @foo(i16 %a) {
; CHECK-LABEL: define {{[^@]+}}@foo
; CHECK-SAME: (i16 [[A:%.*]]) {
; CHECK-NEXT: [[CALL:%.*]] = call i16 @bar(i16 [[A]])
; CHECK-NEXT: ret void
;
%call = call i16 @bar(i16 %a)
ret void
}
define internal i16 @bar(i16 %p1, i16 %p2) {
; CHECK-LABEL: define {{[^@]+}}@bar
; CHECK-SAME: (i16 [[P1:%.*]], i16 [[P2:%.*]]) {
; CHECK-NEXT: ret i16 0
;
ret i16 0
}
;-------------------------------------------------------------------------------
; Additional tests to verify that we still optimize when having a mismatch
; in argument count due to varargs (as long as all non-variadic arguments have
; been provided),
define internal i16 @vararg_prop(i16 %p1, ...) {
; CHECK-LABEL: define {{[^@]+}}@vararg_prop
; CHECK-SAME: (i16 [[P1:%.*]], ...) {
; CHECK-NEXT: ret i16 undef
;
ret i16 %p1
}
define dso_local i16 @vararg_tests(i16 %a) {
; CHECK-LABEL: define {{[^@]+}}@vararg_tests
; CHECK-SAME: (i16 [[A:%.*]]) {
; CHECK-NEXT: [[CALL1:%.*]] = call i16 (i16, ...) @vararg_prop(i16 7, i16 8, i16 [[A]])
; CHECK-NEXT: [[CALL2:%.*]] = call i16 @vararg_no_prop(i16 7)
; CHECK-NEXT: [[ADD:%.*]] = add i16 7, [[CALL2]]
; CHECK-NEXT: ret i16 [[ADD]]
;
%call1 = call i16 (i16, ...) @vararg_prop(i16 7, i16 8, i16 %a)
%call2 = call i16 @vararg_no_prop (i16 7)
%add = add i16 %call1, %call2
ret i16 %add
}
define internal i16 @vararg_no_prop(i16 %p1, i16 %p2, ...) {
; CHECK-LABEL: define {{[^@]+}}@vararg_no_prop
; CHECK-SAME: (i16 [[P1:%.*]], i16 [[P2:%.*]], ...) {
; CHECK-NEXT: ret i16 [[P1]]
;
ret i16 %p1
}
|
