| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=ALL,NOMISALIGN,RV32I %s |
| ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=ALL,NOMISALIGN,RV64I %s |
| ; RUN: llc -mtriple=riscv32 -mattr=+unaligned-scalar-mem -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=ALL,MISALIGN,MISALIGN-RV32I %s |
| ; RUN: llc -mtriple=riscv64 -mattr=+unaligned-scalar-mem -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefixes=ALL,MISALIGN,MISALIGN-RV64I %s |
| |
| ; A collection of cases showing codegen for unaligned loads and stores |
| |
| define i8 @load_i8(ptr %p) { |
| ; ALL-LABEL: load_i8: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: lbu a0, 0(a0) |
| ; ALL-NEXT: ret |
| %res = load i8, ptr %p, align 1 |
| ret i8 %res |
| } |
| |
| define i16 @load_i16(ptr %p) { |
| ; NOMISALIGN-LABEL: load_i16: |
| ; NOMISALIGN: # %bb.0: |
| ; NOMISALIGN-NEXT: lbu a1, 1(a0) |
| ; NOMISALIGN-NEXT: lbu a0, 0(a0) |
| ; NOMISALIGN-NEXT: slli a1, a1, 8 |
| ; NOMISALIGN-NEXT: or a0, a1, a0 |
| ; NOMISALIGN-NEXT: ret |
| ; |
| ; MISALIGN-LABEL: load_i16: |
| ; MISALIGN: # %bb.0: |
| ; MISALIGN-NEXT: lh a0, 0(a0) |
| ; MISALIGN-NEXT: ret |
| %res = load i16, ptr %p, align 1 |
| ret i16 %res |
| } |
| |
| define i24 @load_i24(ptr %p) { |
| ; NOMISALIGN-LABEL: load_i24: |
| ; NOMISALIGN: # %bb.0: |
| ; NOMISALIGN-NEXT: lbu a1, 1(a0) |
| ; NOMISALIGN-NEXT: lbu a2, 0(a0) |
| ; NOMISALIGN-NEXT: lbu a0, 2(a0) |
| ; NOMISALIGN-NEXT: slli a1, a1, 8 |
| ; NOMISALIGN-NEXT: or a1, a1, a2 |
| ; NOMISALIGN-NEXT: slli a0, a0, 16 |
| ; NOMISALIGN-NEXT: or a0, a1, a0 |
| ; NOMISALIGN-NEXT: ret |
| ; |
| ; MISALIGN-LABEL: load_i24: |
| ; MISALIGN: # %bb.0: |
| ; MISALIGN-NEXT: lbu a1, 2(a0) |
| ; MISALIGN-NEXT: lhu a0, 0(a0) |
| ; MISALIGN-NEXT: slli a1, a1, 16 |
| ; MISALIGN-NEXT: or a0, a0, a1 |
| ; MISALIGN-NEXT: ret |
| %res = load i24, ptr %p, align 1 |
| ret i24 %res |
| } |
| |
| define i32 @load_i32(ptr %p) { |
| ; NOMISALIGN-LABEL: load_i32: |
| ; NOMISALIGN: # %bb.0: |
| ; NOMISALIGN-NEXT: lbu a1, 1(a0) |
| ; NOMISALIGN-NEXT: lbu a2, 0(a0) |
| ; NOMISALIGN-NEXT: lbu a3, 2(a0) |
| ; NOMISALIGN-NEXT: lbu a0, 3(a0) |
| ; NOMISALIGN-NEXT: slli a1, a1, 8 |
| ; NOMISALIGN-NEXT: or a1, a1, a2 |
| ; NOMISALIGN-NEXT: slli a3, a3, 16 |
| ; NOMISALIGN-NEXT: slli a0, a0, 24 |
| ; NOMISALIGN-NEXT: or a0, a0, a3 |
| ; NOMISALIGN-NEXT: or a0, a0, a1 |
| ; NOMISALIGN-NEXT: ret |
| ; |
| ; MISALIGN-LABEL: load_i32: |
| ; MISALIGN: # %bb.0: |
| ; MISALIGN-NEXT: lw a0, 0(a0) |
| ; MISALIGN-NEXT: ret |
| %res = load i32, ptr %p, align 1 |
| ret i32 %res |
| } |
| |
| define i64 @load_i64(ptr %p) { |
| ; RV32I-LABEL: load_i64: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: lbu a1, 1(a0) |
| ; RV32I-NEXT: lbu a2, 0(a0) |
| ; RV32I-NEXT: lbu a3, 2(a0) |
| ; RV32I-NEXT: lbu a4, 3(a0) |
| ; RV32I-NEXT: slli a1, a1, 8 |
| ; RV32I-NEXT: or a1, a1, a2 |
| ; RV32I-NEXT: slli a3, a3, 16 |
| ; RV32I-NEXT: slli a4, a4, 24 |
| ; RV32I-NEXT: or a2, a4, a3 |
| ; RV32I-NEXT: or a2, a2, a1 |
| ; RV32I-NEXT: lbu a1, 5(a0) |
| ; RV32I-NEXT: lbu a3, 4(a0) |
| ; RV32I-NEXT: lbu a4, 6(a0) |
| ; RV32I-NEXT: lbu a0, 7(a0) |
| ; RV32I-NEXT: slli a1, a1, 8 |
| ; RV32I-NEXT: or a1, a1, a3 |
| ; RV32I-NEXT: slli a4, a4, 16 |
| ; RV32I-NEXT: slli a0, a0, 24 |
| ; RV32I-NEXT: or a0, a0, a4 |
| ; RV32I-NEXT: or a1, a0, a1 |
| ; RV32I-NEXT: mv a0, a2 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: load_i64: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: lbu a1, 1(a0) |
| ; RV64I-NEXT: lbu a2, 0(a0) |
| ; RV64I-NEXT: lbu a3, 2(a0) |
| ; RV64I-NEXT: lbu a4, 3(a0) |
| ; RV64I-NEXT: slli a1, a1, 8 |
| ; RV64I-NEXT: or a1, a1, a2 |
| ; RV64I-NEXT: slli a3, a3, 16 |
| ; RV64I-NEXT: slli a4, a4, 24 |
| ; RV64I-NEXT: or a3, a4, a3 |
| ; RV64I-NEXT: or a1, a3, a1 |
| ; RV64I-NEXT: lbu a2, 5(a0) |
| ; RV64I-NEXT: lbu a3, 4(a0) |
| ; RV64I-NEXT: lbu a4, 6(a0) |
| ; RV64I-NEXT: lbu a0, 7(a0) |
| ; RV64I-NEXT: slli a2, a2, 8 |
| ; RV64I-NEXT: or a2, a2, a3 |
| ; RV64I-NEXT: slli a4, a4, 16 |
| ; RV64I-NEXT: slli a0, a0, 24 |
| ; RV64I-NEXT: or a0, a0, a4 |
| ; RV64I-NEXT: or a0, a0, a2 |
| ; RV64I-NEXT: slli a0, a0, 32 |
| ; RV64I-NEXT: or a0, a0, a1 |
| ; RV64I-NEXT: ret |
| ; |
| ; MISALIGN-RV32I-LABEL: load_i64: |
| ; MISALIGN-RV32I: # %bb.0: |
| ; MISALIGN-RV32I-NEXT: lw a2, 0(a0) |
| ; MISALIGN-RV32I-NEXT: lw a1, 4(a0) |
| ; MISALIGN-RV32I-NEXT: mv a0, a2 |
| ; MISALIGN-RV32I-NEXT: ret |
| ; |
| ; MISALIGN-RV64I-LABEL: load_i64: |
| ; MISALIGN-RV64I: # %bb.0: |
| ; MISALIGN-RV64I-NEXT: ld a0, 0(a0) |
| ; MISALIGN-RV64I-NEXT: ret |
| %res = load i64, ptr %p, align 1 |
| ret i64 %res |
| } |
| |
| define void @store_i8(ptr %p, i8 %v) { |
| ; ALL-LABEL: store_i8: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sb a1, 0(a0) |
| ; ALL-NEXT: ret |
| store i8 %v, ptr %p, align 1 |
| ret void |
| } |
| |
| define void @store_i16(ptr %p, i16 %v) { |
| ; NOMISALIGN-LABEL: store_i16: |
| ; NOMISALIGN: # %bb.0: |
| ; NOMISALIGN-NEXT: sb a1, 0(a0) |
| ; NOMISALIGN-NEXT: srli a1, a1, 8 |
| ; NOMISALIGN-NEXT: sb a1, 1(a0) |
| ; NOMISALIGN-NEXT: ret |
| ; |
| ; MISALIGN-LABEL: store_i16: |
| ; MISALIGN: # %bb.0: |
| ; MISALIGN-NEXT: sh a1, 0(a0) |
| ; MISALIGN-NEXT: ret |
| store i16 %v, ptr %p, align 1 |
| ret void |
| } |
| |
| define void @store_i24(ptr %p, i24 %v) { |
| ; NOMISALIGN-LABEL: store_i24: |
| ; NOMISALIGN: # %bb.0: |
| ; NOMISALIGN-NEXT: sb a1, 0(a0) |
| ; NOMISALIGN-NEXT: srli a2, a1, 8 |
| ; NOMISALIGN-NEXT: sb a2, 1(a0) |
| ; NOMISALIGN-NEXT: srli a1, a1, 16 |
| ; NOMISALIGN-NEXT: sb a1, 2(a0) |
| ; NOMISALIGN-NEXT: ret |
| ; |
| ; MISALIGN-LABEL: store_i24: |
| ; MISALIGN: # %bb.0: |
| ; MISALIGN-NEXT: sh a1, 0(a0) |
| ; MISALIGN-NEXT: srli a1, a1, 16 |
| ; MISALIGN-NEXT: sb a1, 2(a0) |
| ; MISALIGN-NEXT: ret |
| store i24 %v, ptr %p, align 1 |
| ret void |
| } |
| |
| define void @store_i32(ptr %p, i32 %v) { |
| ; NOMISALIGN-LABEL: store_i32: |
| ; NOMISALIGN: # %bb.0: |
| ; NOMISALIGN-NEXT: sb a1, 0(a0) |
| ; NOMISALIGN-NEXT: srli a2, a1, 24 |
| ; NOMISALIGN-NEXT: sb a2, 3(a0) |
| ; NOMISALIGN-NEXT: srli a2, a1, 16 |
| ; NOMISALIGN-NEXT: sb a2, 2(a0) |
| ; NOMISALIGN-NEXT: srli a1, a1, 8 |
| ; NOMISALIGN-NEXT: sb a1, 1(a0) |
| ; NOMISALIGN-NEXT: ret |
| ; |
| ; MISALIGN-LABEL: store_i32: |
| ; MISALIGN: # %bb.0: |
| ; MISALIGN-NEXT: sw a1, 0(a0) |
| ; MISALIGN-NEXT: ret |
| store i32 %v, ptr %p, align 1 |
| ret void |
| } |
| |
| define void @store_i64(ptr %p, i64 %v) { |
| ; RV32I-LABEL: store_i64: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: sb a2, 4(a0) |
| ; RV32I-NEXT: sb a1, 0(a0) |
| ; RV32I-NEXT: srli a3, a2, 24 |
| ; RV32I-NEXT: sb a3, 7(a0) |
| ; RV32I-NEXT: srli a3, a2, 16 |
| ; RV32I-NEXT: sb a3, 6(a0) |
| ; RV32I-NEXT: srli a2, a2, 8 |
| ; RV32I-NEXT: sb a2, 5(a0) |
| ; RV32I-NEXT: srli a2, a1, 24 |
| ; RV32I-NEXT: sb a2, 3(a0) |
| ; RV32I-NEXT: srli a2, a1, 16 |
| ; RV32I-NEXT: sb a2, 2(a0) |
| ; RV32I-NEXT: srli a1, a1, 8 |
| ; RV32I-NEXT: sb a1, 1(a0) |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: store_i64: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sb a1, 0(a0) |
| ; RV64I-NEXT: srli a2, a1, 56 |
| ; RV64I-NEXT: sb a2, 7(a0) |
| ; RV64I-NEXT: srli a2, a1, 48 |
| ; RV64I-NEXT: sb a2, 6(a0) |
| ; RV64I-NEXT: srli a2, a1, 40 |
| ; RV64I-NEXT: sb a2, 5(a0) |
| ; RV64I-NEXT: srli a2, a1, 32 |
| ; RV64I-NEXT: sb a2, 4(a0) |
| ; RV64I-NEXT: srli a2, a1, 24 |
| ; RV64I-NEXT: sb a2, 3(a0) |
| ; RV64I-NEXT: srli a2, a1, 16 |
| ; RV64I-NEXT: sb a2, 2(a0) |
| ; RV64I-NEXT: srli a1, a1, 8 |
| ; RV64I-NEXT: sb a1, 1(a0) |
| ; RV64I-NEXT: ret |
| ; |
| ; MISALIGN-RV32I-LABEL: store_i64: |
| ; MISALIGN-RV32I: # %bb.0: |
| ; MISALIGN-RV32I-NEXT: sw a2, 4(a0) |
| ; MISALIGN-RV32I-NEXT: sw a1, 0(a0) |
| ; MISALIGN-RV32I-NEXT: ret |
| ; |
| ; MISALIGN-RV64I-LABEL: store_i64: |
| ; MISALIGN-RV64I: # %bb.0: |
| ; MISALIGN-RV64I-NEXT: sd a1, 0(a0) |
| ; MISALIGN-RV64I-NEXT: ret |
| store i64 %v, ptr %p, align 1 |
| ret void |
| } |
| |
| define void @merge_stores_i8_i16(ptr %p) { |
| ; ALL-LABEL: merge_stores_i8_i16: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sb zero, 0(a0) |
| ; ALL-NEXT: sb zero, 1(a0) |
| ; ALL-NEXT: ret |
| store i8 0, ptr %p |
| %p2 = getelementptr i8, ptr %p, i32 1 |
| store i8 0, ptr %p2 |
| ret void |
| } |
| |
| define void @merge_stores_i8_i32(ptr %p) { |
| ; ALL-LABEL: merge_stores_i8_i32: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sb zero, 0(a0) |
| ; ALL-NEXT: sb zero, 1(a0) |
| ; ALL-NEXT: sb zero, 2(a0) |
| ; ALL-NEXT: sb zero, 3(a0) |
| ; ALL-NEXT: ret |
| store i8 0, ptr %p |
| %p2 = getelementptr i8, ptr %p, i32 1 |
| store i8 0, ptr %p2 |
| %p3 = getelementptr i8, ptr %p, i32 2 |
| store i8 0, ptr %p3 |
| %p4 = getelementptr i8, ptr %p, i32 3 |
| store i8 0, ptr %p4 |
| ret void |
| } |
| |
| define void @merge_stores_i8_i64(ptr %p) { |
| ; ALL-LABEL: merge_stores_i8_i64: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sb zero, 0(a0) |
| ; ALL-NEXT: sb zero, 1(a0) |
| ; ALL-NEXT: sb zero, 2(a0) |
| ; ALL-NEXT: sb zero, 3(a0) |
| ; ALL-NEXT: sb zero, 4(a0) |
| ; ALL-NEXT: sb zero, 5(a0) |
| ; ALL-NEXT: sb zero, 6(a0) |
| ; ALL-NEXT: sb zero, 7(a0) |
| ; ALL-NEXT: ret |
| store i8 0, ptr %p |
| %p2 = getelementptr i8, ptr %p, i32 1 |
| store i8 0, ptr %p2 |
| %p3 = getelementptr i8, ptr %p, i32 2 |
| store i8 0, ptr %p3 |
| %p4 = getelementptr i8, ptr %p, i32 3 |
| store i8 0, ptr %p4 |
| %p5 = getelementptr i8, ptr %p, i32 4 |
| store i8 0, ptr %p5 |
| %p6 = getelementptr i8, ptr %p, i32 5 |
| store i8 0, ptr %p6 |
| %p7 = getelementptr i8, ptr %p, i32 6 |
| store i8 0, ptr %p7 |
| %p8 = getelementptr i8, ptr %p, i32 7 |
| store i8 0, ptr %p8 |
| ret void |
| } |
| |
| define void @merge_stores_i16_i32(ptr %p) { |
| ; ALL-LABEL: merge_stores_i16_i32: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sh zero, 0(a0) |
| ; ALL-NEXT: sh zero, 2(a0) |
| ; ALL-NEXT: ret |
| store i16 0, ptr %p |
| %p2 = getelementptr i16, ptr %p, i32 1 |
| store i16 0, ptr %p2 |
| ret void |
| } |
| |
| define void @merge_stores_i16_i64(ptr %p) { |
| ; ALL-LABEL: merge_stores_i16_i64: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sh zero, 0(a0) |
| ; ALL-NEXT: sh zero, 2(a0) |
| ; ALL-NEXT: sh zero, 4(a0) |
| ; ALL-NEXT: sh zero, 6(a0) |
| ; ALL-NEXT: ret |
| store i16 0, ptr %p |
| %p2 = getelementptr i16, ptr %p, i32 1 |
| store i16 0, ptr %p2 |
| %p3 = getelementptr i16, ptr %p, i32 2 |
| store i16 0, ptr %p3 |
| %p4 = getelementptr i16, ptr %p, i32 3 |
| store i16 0, ptr %p4 |
| ret void |
| } |
| |
| define void @merge_stores_i32_i64(ptr %p) { |
| ; ALL-LABEL: merge_stores_i32_i64: |
| ; ALL: # %bb.0: |
| ; ALL-NEXT: sw zero, 0(a0) |
| ; ALL-NEXT: sw zero, 4(a0) |
| ; ALL-NEXT: ret |
| store i32 0, ptr %p |
| %p2 = getelementptr i32, ptr %p, i32 1 |
| store i32 0, ptr %p2 |
| ret void |
| } |