3ff2022bb9
These immediates can be materialised with just an lui, rather than an lui+addi pair. llvm-svn: 330293
64 lines
1.4 KiB
LLVM
64 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
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; RUN: | FileCheck %s -check-prefix=RV32I
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; Materializing constants
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define i32 @zero() nounwind {
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; RV32I-LABEL: zero:
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; RV32I: # %bb.0:
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; RV32I-NEXT: mv a0, zero
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; RV32I-NEXT: ret
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ret i32 0
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}
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define i32 @pos_small() nounwind {
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; RV32I-LABEL: pos_small:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi a0, zero, 2047
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; RV32I-NEXT: ret
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ret i32 2047
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}
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define i32 @neg_small() nounwind {
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; RV32I-LABEL: neg_small:
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; RV32I: # %bb.0:
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; RV32I-NEXT: addi a0, zero, -2048
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; RV32I-NEXT: ret
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ret i32 -2048
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}
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define i32 @pos_i32() nounwind {
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; RV32I-LABEL: pos_i32:
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; RV32I: # %bb.0:
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; RV32I-NEXT: lui a0, 423811
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; RV32I-NEXT: addi a0, a0, -1297
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; RV32I-NEXT: ret
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ret i32 1735928559
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}
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define i32 @neg_i32() nounwind {
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; RV32I-LABEL: neg_i32:
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; RV32I: # %bb.0:
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; RV32I-NEXT: lui a0, 912092
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; RV32I-NEXT: addi a0, a0, -273
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; RV32I-NEXT: ret
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ret i32 -559038737
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}
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define i32 @pos_i32_hi20_only() nounwind {
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; RV32I-LABEL: pos_i32_hi20_only:
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; RV32I: # %bb.0:
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; RV32I-NEXT: lui a0, 16
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; RV32I-NEXT: ret
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ret i32 65536
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}
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define i32 @neg_i32_hi20_only() nounwind {
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; RV32I-LABEL: neg_i32_hi20_only:
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; RV32I: # %bb.0:
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; RV32I-NEXT: lui a0, 1048560
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; RV32I-NEXT: ret
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ret i32 -65536
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}
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