[PATCH] D107860: [RISCV] Add test cases showing inefficient materialization for stores of immediates. NFC
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Aug 12 10:14:28 PDT 2021
This revision was automatically updated to reflect the committed changes.
Closed by commit rGe25665f52eff: [RISCV] Add test cases showing inefficient materialization for stores of… (authored by craig.topper).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D107860/new/
https://reviews.llvm.org/D107860
Files:
llvm/test/CodeGen/RISCV/imm.ll
Index: llvm/test/CodeGen/RISCV/imm.ll
===================================================================
--- llvm/test/CodeGen/RISCV/imm.ll
+++ llvm/test/CodeGen/RISCV/imm.ll
@@ -477,3 +477,40 @@
; RV64I-NEXT: ret
ret i64 -1152921504301427080 ; 0xF000_0000_1234_5678
}
+
+; FIXME: This should use a single ADDI for the immediate.
+define void @imm_store_i16_neg1(i16* %p) nounwind {
+; RV32I-LABEL: imm_store_i16_neg1:
+; RV32I: # %bb.0:
+; RV32I-NEXT: lui a1, 16
+; RV32I-NEXT: addi a1, a1, -1
+; RV32I-NEXT: sh a1, 0(a0)
+; RV32I-NEXT: ret
+;
+; RV64I-LABEL: imm_store_i16_neg1:
+; RV64I: # %bb.0:
+; RV64I-NEXT: lui a1, 16
+; RV64I-NEXT: addiw a1, a1, -1
+; RV64I-NEXT: sh a1, 0(a0)
+; RV64I-NEXT: ret
+ store i16 -1, i16* %p
+ ret void
+}
+
+; FIXME: This should use a single ADDI for the immediate.
+define void @imm_store_i32_neg1(i32* %p) nounwind {
+; RV32I-LABEL: imm_store_i32_neg1:
+; RV32I: # %bb.0:
+; RV32I-NEXT: addi a1, zero, -1
+; RV32I-NEXT: sw a1, 0(a0)
+; RV32I-NEXT: ret
+;
+; RV64I-LABEL: imm_store_i32_neg1:
+; RV64I: # %bb.0:
+; RV64I-NEXT: addi a1, zero, -1
+; RV64I-NEXT: srli a1, a1, 32
+; RV64I-NEXT: sw a1, 0(a0)
+; RV64I-NEXT: ret
+ store i32 -1, i32* %p
+ ret void
+}
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