source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/ARM/zextload_demandedbits.ll @ 5027

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

Upgrade to llvm 3.8

File size: 1.2 KB
Line 
1; RUN: llc < %s -march=arm -mtriple="thumbv7-apple-ios3.0.0" | FileCheck %s
2
3target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
4
5%struct.eggs = type { %struct.spam, i16 }
6%struct.spam = type { [3 x i32] }
7%struct.barney = type { [2 x i32], [2 x i32] }
8
9; Make sure that the sext op does not get lost due to computeKnownBits.
10; CHECK: quux
11; CHECK: lsl
12; CHECK: asr
13; CHECK: bl
14; CHECK: pop
15define void @quux(%struct.eggs* %arg) {
16bb:
17  %tmp1 = getelementptr inbounds %struct.eggs, %struct.eggs* %arg, i32 0, i32 1
18  %0 = load i16, i16* %tmp1, align 2
19  %tobool = icmp eq i16 %0, 0
20  br i1 %tobool, label %bb16, label %bb3
21
22bb3:                                              ; preds = %bb
23  %tmp4 = bitcast i16* %tmp1 to i8*
24  %tmp5 = ptrtoint i16* %tmp1 to i32
25  %tmp6 = shl i32 %tmp5, 20
26  %tmp7 = ashr exact i32 %tmp6, 20
27  %tmp14 = getelementptr inbounds %struct.barney, %struct.barney* undef, i32 %tmp7
28  %tmp15 = tail call i32 @widget(%struct.barney* %tmp14, i8* %tmp4, i32 %tmp7)
29  br label %bb16
30
31bb16:                                             ; preds = %bb3, %bb
32  ret void
33}
34
35declare i32 @widget(%struct.barney*, i8*, i32)
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