1; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s
2; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s
3
4; bitfieldinsert32: Test for rlwimi
5; equivalent C code
6;   struct s32 {
7;   	int a:8;
8;   	int b:16;
9;   	int c:8;
10;   };
11;   void bitfieldinsert32(struct s32 *p, unsigned int v) {
12;   	p->b = v;
13;   }
14
15%struct.s32 = type { i32 }
16
17define void @bitfieldinsert32(%struct.s32* nocapture %p, i32 zeroext %v) {
18; CHECK-LABEL: @bitfieldinsert32
19; CHECK: lwz [[REG1:[0-9]+]], 0(3)
20; CHECK: rlwimi [[REG1]], 4, 8, 8, 23
21; CHECK: stw [[REG1]], 0(3)
22; CHECK: blr
23entry:
24  %0 = getelementptr inbounds %struct.s32, %struct.s32* %p, i64 0, i32 0
25  %bf.load = load i32, i32* %0, align 4
26  %bf.value = shl i32 %v, 8
27  %bf.shl = and i32 %bf.value, 16776960
28  %bf.clear = and i32 %bf.load, -16776961
29  %bf.set = or i32 %bf.clear, %bf.shl
30  store i32 %bf.set, i32* %0, align 4
31  ret void
32}
33
34