1 ; RUN: llc < %s -march=arm -mtriple="thumbv7-apple-ios3.0.0" | FileCheck %s 2 3 target 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 15 define void @quux(%struct.eggs* %arg) { 16 bb: 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 22 bb3: ; 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 31 bb16: ; preds = %bb3, %bb 32 ret void 33 } 34 35 declare i32 @widget(%struct.barney*, i8*, i32) 36
