1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
; RUN: opt < %s -basicaa -memcpyopt -S | not grep "call.*memcpy."
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
%a = type { i32 }
%b = type { float }
declare void @g(%a* nocapture)
define float @f() {
entry:
%a_var = alloca %a
%b_var = alloca %b, align 1
call void @g(%a* %a_var)
%a_i8 = bitcast %a* %a_var to i8*
%b_i8 = bitcast %b* %b_var to i8*
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %b_i8, i8* %a_i8, i32 4, i1 false)
%tmp1 = getelementptr %b, %b* %b_var, i32 0, i32 0
%tmp2 = load float, float* %tmp1
ret float %tmp2
}
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind
|
