[llvm] 0cceea9 - [LoongArch][NFC] Add tests for (X & -256) == 256 -> (X >> 8) == 1

[Weining Lu via llvm-commits]

Author: WANG Rui
Date: 2023-07-24T17:42:10+08:00
New Revision: 0cceea90bf5998e587d6da114ce42c874bf41f6e

URL: https://github.com/llvm/llvm-project/commit/0cceea90bf5998e587d6da114ce42c874bf41f6e
DIFF: https://github.com/llvm/llvm-project/commit/0cceea90bf5998e587d6da114ce42c874bf41f6e.diff

LOG: [LoongArch][NFC] Add tests for (X & -256) == 256 -> (X >> 8) == 1

Add tests for (X & -256) == 256 -> (X >> 8) == 1.

Signed-off-by: WANG Rui <wangrui at loongson.cn>

Reviewed By: xen0n

Differential Revision: https://reviews.llvm.org/D154810

Added: 
    llvm/test/CodeGen/LoongArch/legalicmpimm.ll

Modified: 
    

Removed: 
    


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diff  --git a/llvm/test/CodeGen/LoongArch/legalicmpimm.ll b/llvm/test/CodeGen/LoongArch/legalicmpimm.ll
new file mode 100644
index 00000000000000..9e10411427a716
--- /dev/null
+++ b/llvm/test/CodeGen/LoongArch/legalicmpimm.ll
@@ -0,0 +1,28 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc --mtriple=loongarch32 < %s | FileCheck %s --check-prefix=LA32
+; RUN: llc --mtriple=loongarch64 < %s | FileCheck %s --check-prefix=LA64
+
+define i32 @icmpimm(i32 %x) {
+; LA32-LABEL: icmpimm:
+; LA32:       # %bb.0:
+; LA32-NEXT:    lu12i.w $a1, -1
+; LA32-NEXT:    and $a0, $a0, $a1
+; LA32-NEXT:    lu12i.w $a1, 1
+; LA32-NEXT:    xor $a0, $a0, $a1
+; LA32-NEXT:    sltui $a0, $a0, 1
+; LA32-NEXT:    ret
+;
+; LA64-LABEL: icmpimm:
+; LA64:       # %bb.0:
+; LA64-NEXT:    lu12i.w $a1, -1
+; LA64-NEXT:    lu32i.d $a1, 0
+; LA64-NEXT:    and $a0, $a0, $a1
+; LA64-NEXT:    lu12i.w $a1, 1
+; LA64-NEXT:    xor $a0, $a0, $a1
+; LA64-NEXT:    sltui $a0, $a0, 1
+; LA64-NEXT:    ret
+  %1 = and i32 %x, -4096
+  %2 = icmp eq i32 %1, 4096
+  %3 = zext i1 %2 to i32
+  ret i32 %3
+}