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
|
; RUN: opt < %s -bounds-checking -S | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
%struct.s2_packed = type <{ i64, i32, i32, i32, i16, i8 }>
; CHECK-LABEL: @f
; CHECK-NOT: trap
define i16 @f() {
entry:
%packed1 = alloca %struct.s2_packed, align 8
%gep = getelementptr inbounds %struct.s2_packed, %struct.s2_packed* %packed1, i32 0, i32 4
%ptr = bitcast i16* %gep to i32*
%val = load i32, i32* %ptr, align 4
%valt = trunc i32 %val to i16
ret i16 %valt
}
; CHECK-LABEL: @f
; CHECK: call void @llvm.trap()
define i16 @f2() {
entry:
%packed1 = alloca %struct.s2_packed, align 8
%gep = getelementptr inbounds %struct.s2_packed, %struct.s2_packed* %packed1, i32 0, i32 4
%ptr = bitcast i16* %gep to i48*
%val = load i48, i48* %ptr, align 4
%valt = trunc i48 %val to i16
ret i16 %valt
}
|
