1; RUN: llc < %s -march=thumb -mattr=+thumb2 | grep ldrb | count 1
2; RUN: llc < %s -march=thumb -mattr=+thumb2 | grep ldrh | count 1
3; RUN: llc < %s -march=thumb -mattr=+thumb2 | grep ldrsb | count 1
4; RUN: llc < %s -march=thumb -mattr=+thumb2 | grep ldrsh | count 1
5
6define i32 @test1(i8* %v.pntr.s0.u1) {
7    %tmp.u = load i8* %v.pntr.s0.u1
8    %tmp1.s = zext i8 %tmp.u to i32
9    ret i32 %tmp1.s
10}
11
12define i32 @test2(i16* %v.pntr.s0.u1) {
13    %tmp.u = load i16* %v.pntr.s0.u1
14    %tmp1.s = zext i16 %tmp.u to i32
15    ret i32 %tmp1.s
16}
17
18define i32 @test3(i8* %v.pntr.s1.u0) {
19    %tmp.s = load i8* %v.pntr.s1.u0
20    %tmp1.s = sext i8 %tmp.s to i32
21    ret i32 %tmp1.s
22}
23
24define i32 @test4() {
25    %tmp.s = load i16* null
26    %tmp1.s = sext i16 %tmp.s to i32
27    ret i32 %tmp1.s
28}
29