xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/zext-shl.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86 | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdefine i32 @t1(i8 zeroext %x) nounwind readnone ssp {
4*9880d681SAndroid Build Coastguard Workerentry:
5*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: t1:
6*9880d681SAndroid Build Coastguard Worker; CHECK: shll
7*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: movzwl
8*9880d681SAndroid Build Coastguard Worker; CHECK: ret
9*9880d681SAndroid Build Coastguard Worker  %0 = zext i8 %x to i16
10*9880d681SAndroid Build Coastguard Worker  %1 = shl i16 %0, 5
11*9880d681SAndroid Build Coastguard Worker  %2 = zext i16 %1 to i32
12*9880d681SAndroid Build Coastguard Worker  ret i32 %2
13*9880d681SAndroid Build Coastguard Worker}
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Workerdefine i32 @t2(i8 zeroext %x) nounwind readnone ssp {
16*9880d681SAndroid Build Coastguard Workerentry:
17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: t2:
18*9880d681SAndroid Build Coastguard Worker; CHECK: shrl
19*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: movzwl
20*9880d681SAndroid Build Coastguard Worker; CHECK: ret
21*9880d681SAndroid Build Coastguard Worker  %0 = zext i8 %x to i16
22*9880d681SAndroid Build Coastguard Worker  %1 = lshr i16 %0, 3
23*9880d681SAndroid Build Coastguard Worker  %2 = zext i16 %1 to i32
24*9880d681SAndroid Build Coastguard Worker  ret i32 %2
25*9880d681SAndroid Build Coastguard Worker}
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