xref: /aosp_15_r20/external/llvm/test/CodeGen/X86/sar_fold64.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdefine i32 @shl48sar47(i64 %a) #0 {
4*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: shl48sar47:
5*9880d681SAndroid Build Coastguard Worker; CHECK:       # BB#0:
6*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:    movswq %di, %rax
7*9880d681SAndroid Build Coastguard Worker  %1 = shl i64 %a, 48
8*9880d681SAndroid Build Coastguard Worker  %2 = ashr exact i64 %1, 47
9*9880d681SAndroid Build Coastguard Worker  %3 = trunc i64 %2 to i32
10*9880d681SAndroid Build Coastguard Worker  ret i32 %3
11*9880d681SAndroid Build Coastguard Worker}
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Workerdefine i32 @shl48sar49(i64 %a) #0 {
14*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: shl48sar49:
15*9880d681SAndroid Build Coastguard Worker; CHECK:       # BB#0:
16*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:    movswq %di, %rax
17*9880d681SAndroid Build Coastguard Worker  %1 = shl i64 %a, 48
18*9880d681SAndroid Build Coastguard Worker  %2 = ashr exact i64 %1, 49
19*9880d681SAndroid Build Coastguard Worker  %3 = trunc i64 %2 to i32
20*9880d681SAndroid Build Coastguard Worker  ret i32 %3
21*9880d681SAndroid Build Coastguard Worker}
22*9880d681SAndroid Build Coastguard Worker
23*9880d681SAndroid Build Coastguard Workerdefine i32 @shl56sar55(i64 %a) #0 {
24*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: shl56sar55:
25*9880d681SAndroid Build Coastguard Worker; CHECK:       # BB#0:
26*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:    movsbq %dil, %rax
27*9880d681SAndroid Build Coastguard Worker  %1 = shl i64 %a, 56
28*9880d681SAndroid Build Coastguard Worker  %2 = ashr exact i64 %1, 55
29*9880d681SAndroid Build Coastguard Worker  %3 = trunc i64 %2 to i32
30*9880d681SAndroid Build Coastguard Worker  ret i32 %3
31*9880d681SAndroid Build Coastguard Worker}
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Workerdefine i32 @shl56sar57(i64 %a) #0 {
34*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: shl56sar57:
35*9880d681SAndroid Build Coastguard Worker; CHECK:       # BB#0:
36*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT:    movsbq %dil, %rax
37*9880d681SAndroid Build Coastguard Worker  %1 = shl i64 %a, 56
38*9880d681SAndroid Build Coastguard Worker  %2 = ashr exact i64 %1, 57
39*9880d681SAndroid Build Coastguard Worker  %3 = trunc i64 %2 to i32
40*9880d681SAndroid Build Coastguard Worker  ret i32 %3
41*9880d681SAndroid Build Coastguard Worker}
42*9880d681SAndroid Build Coastguard Worker
43*9880d681SAndroid Build Coastguard Workerattributes #0 = { nounwind }
44