[llvm] 9790a2a - [tests] precommit tests for D107692

[Peilin Guo via llvm-commits]

Author: Yunde Zhong
Date: 2021-08-17T13:05:02+08:00
New Revision: 9790a2a72f60bb2caf891658c3c6a02b61e1f1a2

URL: https://github.com/llvm/llvm-project/commit/9790a2a72f60bb2caf891658c3c6a02b61e1f1a2
DIFF: https://github.com/llvm/llvm-project/commit/9790a2a72f60bb2caf891658c3c6a02b61e1f1a2.diff

LOG: [tests] precommit tests for D107692

Added: 
    llvm/test/CodeGen/AArch64/arm64-srl-and.ll

Modified: 
    

Removed: 
    


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diff  --git a/llvm/test/CodeGen/AArch64/arm64-srl-and.ll b/llvm/test/CodeGen/AArch64/arm64-srl-and.ll
new file mode 100644
index 0000000000000..2f024e444d25f
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/arm64-srl-and.ll
@@ -0,0 +1,29 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64-linux-gnu -O3 < %s | FileCheck %s
+
+; Disable the dagcombine if operand has multi use
+
+ at g = global i16 0, align 4
+define i32 @srl_and()  {
+; CHECK-LABEL: srl_and:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    adrp x8, :got:g
+; CHECK-NEXT:    ldr x8, [x8, :got_lo12:g]
+; CHECK-NEXT:    mov w9, #50
+; CHECK-NEXT:    ldrh w8, [x8]
+; CHECK-NEXT:    eor w8, w8, w9
+; CHECK-NEXT:    sub w8, w8, #1
+; CHECK-NEXT:    and w0, w8, w8, lsr #16
+; CHECK-NEXT:    ret
+entry:
+  %0 = load i16, i16* @g, align 4
+  %1 = xor i16 %0, 50
+  %tobool = icmp ne i16 %1, 0
+  %lor.ext = zext i1 %tobool to i32
+  %sub = add i16 %1, -1
+
+  %srl = zext i16 %sub to i32
+  %and = and i32 %srl, %lor.ext
+
+  ret i32 %and
+}