[llvm] 25af23f - [RISCV] Add test coverage for #95284
Simon Pilgrim via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 12 11:55:56 PDT 2024
Author: Simon Pilgrim
Date: 2024-06-12T19:55:39+01:00
New Revision: 25af23f52a62e9f0d835ae167567ceb9831546a7
URL: https://github.com/llvm/llvm-project/commit/25af23f52a62e9f0d835ae167567ceb9831546a7
DIFF: https://github.com/llvm/llvm-project/commit/25af23f52a62e9f0d835ae167567ceb9831546a7.diff
LOG: [RISCV] Add test coverage for #95284
Added:
llvm/test/CodeGen/RISCV/pr95284.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/CodeGen/RISCV/pr95284.ll b/llvm/test/CodeGen/RISCV/pr95284.ll
new file mode 100644
index 0000000000000..e8100873ca23f
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/pr95284.ll
@@ -0,0 +1,38 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s | FileCheck -check-prefix=RV32I %s
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s | FileCheck -check-prefix=RV64I %s
+
+; regression due to creation of temporary i32 avgfloors node
+define signext i64 @PR95284(i32 signext %0) {
+; RV32I-LABEL: PR95284:
+; RV32I: # %bb.0: # %entry
+; RV32I-NEXT: addi a1, a0, -1
+; RV32I-NEXT: srli a1, a1, 1
+; RV32I-NEXT: seqz a0, a0
+; RV32I-NEXT: slli a2, a0, 31
+; RV32I-NEXT: or a1, a2, a1
+; RV32I-NEXT: addi a1, a1, 1
+; RV32I-NEXT: seqz a2, a1
+; RV32I-NEXT: sub a2, a2, a0
+; RV32I-NEXT: andi a0, a1, -2
+; RV32I-NEXT: slli a1, a2, 1
+; RV32I-NEXT: srli a1, a1, 1
+; RV32I-NEXT: ret
+;
+; RV64I-LABEL: PR95284:
+; RV64I: # %bb.0: # %entry
+; RV64I-NEXT: addi a0, a0, -1
+; RV64I-NEXT: srli a0, a0, 1
+; RV64I-NEXT: addi a0, a0, 1
+; RV64I-NEXT: li a1, -3
+; RV64I-NEXT: srli a1, a1, 1
+; RV64I-NEXT: and a0, a0, a1
+; RV64I-NEXT: ret
+entry:
+ %1 = zext nneg i32 %0 to i64
+ %2 = add nsw i64 %1, -1
+ %3 = lshr i64 %2, 1
+ %4 = add nuw nsw i64 %3, 1
+ %5 = and i64 %4, 9223372036854775806
+ ret i64 %5
+}
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