xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/shift-i256.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86        | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86-64 -O0 | FileCheck %s -check-prefix=CHECK-X64
3*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=x86-64 -O2 | FileCheck %s -check-prefix=CHECK-X64
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: shift1
6*9880d681SAndroid Build Coastguard Workerdefine void @shift1(i256 %x, i256 %a, i256* nocapture %r) nounwind readnone {
7*9880d681SAndroid Build Coastguard Workerentry:
8*9880d681SAndroid Build Coastguard Worker	%0 = ashr i256 %x, %a
9*9880d681SAndroid Build Coastguard Worker	store i256 %0, i256* %r
10*9880d681SAndroid Build Coastguard Worker        ret void
11*9880d681SAndroid Build Coastguard Worker}
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: shift2
14*9880d681SAndroid Build Coastguard Workerdefine i256 @shift2(i256 %c) nounwind
15*9880d681SAndroid Build Coastguard Worker{
16*9880d681SAndroid Build Coastguard Worker  %b = shl i256 1, %c  ; %c must not be a constant
17*9880d681SAndroid Build Coastguard Worker  ; Special case when %c is 0:
18*9880d681SAndroid Build Coastguard Worker  ; CHECK-X64: testb [[REG:%r[0-9]+b]], [[REG]]
19*9880d681SAndroid Build Coastguard Worker  ; CHECK-X64: cmoveq
20*9880d681SAndroid Build Coastguard Worker  ret i256 %b
21*9880d681SAndroid Build Coastguard Worker}
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