forked from OSchip/llvm-project
252 lines
8.8 KiB
LLVM
252 lines
8.8 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
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@var_8bit = global i8 0
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@var_16bit = global i16 0
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@var_32bit = global i32 0
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@var_64bit = global i64 0
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@var_float = global float 0.0
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@var_double = global double 0.0
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define void @ldst_8bit() {
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; CHECK-LABEL: ldst_8bit:
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; No architectural support for loads to 16-bit or 8-bit since we
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; promote i8 during lowering.
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; match a sign-extending load 8-bit -> 32-bit
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%val8_sext32 = load volatile i8* @var_8bit
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%val32_signed = sext i8 %val8_sext32 to i32
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store volatile i32 %val32_signed, i32* @var_32bit
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; CHECK: adrp {{x[0-9]+}}, var_8bit
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; CHECK: ldrsb {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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; match a zero-extending load volatile 8-bit -> 32-bit
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%val8_zext32 = load volatile i8* @var_8bit
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%val32_unsigned = zext i8 %val8_zext32 to i32
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store volatile i32 %val32_unsigned, i32* @var_32bit
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; CHECK: ldrb {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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; match an any-extending load volatile 8-bit -> 32-bit
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%val8_anyext = load volatile i8* @var_8bit
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%newval8 = add i8 %val8_anyext, 1
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store volatile i8 %newval8, i8* @var_8bit
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; CHECK: ldrb {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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; match a sign-extending load volatile 8-bit -> 64-bit
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%val8_sext64 = load volatile i8* @var_8bit
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%val64_signed = sext i8 %val8_sext64 to i64
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store volatile i64 %val64_signed, i64* @var_64bit
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; CHECK: ldrsb {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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; match a zero-extending load volatile 8-bit -> 64-bit.
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; This uses the fact that ldrb w0, [x0] will zero out the high 32-bits
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; of x0 so it's identical to load volatileing to 32-bits.
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%val8_zext64 = load volatile i8* @var_8bit
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%val64_unsigned = zext i8 %val8_zext64 to i64
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store volatile i64 %val64_unsigned, i64* @var_64bit
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; CHECK: ldrb {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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; truncating store volatile 32-bits to 8-bits
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%val32 = load volatile i32* @var_32bit
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%val8_trunc32 = trunc i32 %val32 to i8
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store volatile i8 %val8_trunc32, i8* @var_8bit
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; CHECK: strb {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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; truncating store volatile 64-bits to 8-bits
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%val64 = load volatile i64* @var_64bit
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%val8_trunc64 = trunc i64 %val64 to i8
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store volatile i8 %val8_trunc64, i8* @var_8bit
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; CHECK: strb {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_8bit]
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ret void
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}
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define void @ldst_16bit() {
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; CHECK-LABEL: ldst_16bit:
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; No architectural support for load volatiles to 16-bit promote i16 during
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; lowering.
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; match a sign-extending load volatile 16-bit -> 32-bit
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%val16_sext32 = load volatile i16* @var_16bit
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%val32_signed = sext i16 %val16_sext32 to i32
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store volatile i32 %val32_signed, i32* @var_32bit
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; CHECK: adrp {{x[0-9]+}}, var_16bit
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; CHECK: ldrsh {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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; match a zero-extending load volatile 16-bit -> 32-bit
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%val16_zext32 = load volatile i16* @var_16bit
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%val32_unsigned = zext i16 %val16_zext32 to i32
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store volatile i32 %val32_unsigned, i32* @var_32bit
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; CHECK: ldrh {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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; match an any-extending load volatile 16-bit -> 32-bit
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%val16_anyext = load volatile i16* @var_16bit
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%newval16 = add i16 %val16_anyext, 1
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store volatile i16 %newval16, i16* @var_16bit
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; CHECK: ldrh {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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; match a sign-extending load volatile 16-bit -> 64-bit
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%val16_sext64 = load volatile i16* @var_16bit
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%val64_signed = sext i16 %val16_sext64 to i64
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store volatile i64 %val64_signed, i64* @var_64bit
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; CHECK: ldrsh {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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; match a zero-extending load volatile 16-bit -> 64-bit.
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; This uses the fact that ldrb w0, [x0] will zero out the high 32-bits
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; of x0 so it's identical to load volatileing to 32-bits.
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%val16_zext64 = load volatile i16* @var_16bit
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%val64_unsigned = zext i16 %val16_zext64 to i64
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store volatile i64 %val64_unsigned, i64* @var_64bit
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; CHECK: ldrh {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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; truncating store volatile 32-bits to 16-bits
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%val32 = load volatile i32* @var_32bit
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%val16_trunc32 = trunc i32 %val32 to i16
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store volatile i16 %val16_trunc32, i16* @var_16bit
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; CHECK: strh {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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; truncating store volatile 64-bits to 16-bits
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%val64 = load volatile i64* @var_64bit
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%val16_trunc64 = trunc i64 %val64 to i16
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store volatile i16 %val16_trunc64, i16* @var_16bit
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; CHECK: strh {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_16bit]
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ret void
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}
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define void @ldst_32bit() {
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; CHECK-LABEL: ldst_32bit:
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; Straight 32-bit load/store
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%val32_noext = load volatile i32* @var_32bit
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store volatile i32 %val32_noext, i32* @var_32bit
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; CHECK: adrp {{x[0-9]+}}, var_32bit
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; CHECK: ldr {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_32bit]
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; CHECK: str {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_32bit]
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; Zero-extension to 64-bits
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%val32_zext = load volatile i32* @var_32bit
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%val64_unsigned = zext i32 %val32_zext to i64
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store volatile i64 %val64_unsigned, i64* @var_64bit
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; CHECK: ldr {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_32bit]
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; CHECK: str {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_64bit]
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; Sign-extension to 64-bits
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%val32_sext = load volatile i32* @var_32bit
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%val64_signed = sext i32 %val32_sext to i64
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store volatile i64 %val64_signed, i64* @var_64bit
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; CHECK: ldrsw {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_32bit]
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; CHECK: str {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_64bit]
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; Truncation from 64-bits
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%val64_trunc = load volatile i64* @var_64bit
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%val32_trunc = trunc i64 %val64_trunc to i32
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store volatile i32 %val32_trunc, i32* @var_32bit
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_64bit]
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; CHECK: str {{w[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_32bit]
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ret void
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}
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@arr8 = global i8* null
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@arr16 = global i16* null
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@arr32 = global i32* null
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@arr64 = global i64* null
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; Now check that our selection copes with accesses more complex than a
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; single symbol. Permitted offsets should be folded into the loads and
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; stores. Since all forms use the same Operand it's only necessary to
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; check the various access-sizes involved.
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define void @ldst_complex_offsets() {
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; CHECK: ldst_complex_offsets
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%arr8_addr = load volatile i8** @arr8
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; CHECK: adrp {{x[0-9]+}}, arr8
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:arr8]
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%arr8_sub1_addr = getelementptr i8* %arr8_addr, i64 1
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%arr8_sub1 = load volatile i8* %arr8_sub1_addr
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store volatile i8 %arr8_sub1, i8* @var_8bit
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; CHECK: ldrb {{w[0-9]+}}, [{{x[0-9]+}}, #1]
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%arr8_sub4095_addr = getelementptr i8* %arr8_addr, i64 4095
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%arr8_sub4095 = load volatile i8* %arr8_sub4095_addr
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store volatile i8 %arr8_sub4095, i8* @var_8bit
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; CHECK: ldrb {{w[0-9]+}}, [{{x[0-9]+}}, #4095]
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%arr16_addr = load volatile i16** @arr16
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; CHECK: adrp {{x[0-9]+}}, arr16
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:arr16]
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%arr16_sub1_addr = getelementptr i16* %arr16_addr, i64 1
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%arr16_sub1 = load volatile i16* %arr16_sub1_addr
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store volatile i16 %arr16_sub1, i16* @var_16bit
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; CHECK: ldrh {{w[0-9]+}}, [{{x[0-9]+}}, #2]
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%arr16_sub4095_addr = getelementptr i16* %arr16_addr, i64 4095
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%arr16_sub4095 = load volatile i16* %arr16_sub4095_addr
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store volatile i16 %arr16_sub4095, i16* @var_16bit
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; CHECK: ldrh {{w[0-9]+}}, [{{x[0-9]+}}, #8190]
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%arr32_addr = load volatile i32** @arr32
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; CHECK: adrp {{x[0-9]+}}, arr32
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:arr32]
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%arr32_sub1_addr = getelementptr i32* %arr32_addr, i64 1
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%arr32_sub1 = load volatile i32* %arr32_sub1_addr
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store volatile i32 %arr32_sub1, i32* @var_32bit
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; CHECK: ldr {{w[0-9]+}}, [{{x[0-9]+}}, #4]
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%arr32_sub4095_addr = getelementptr i32* %arr32_addr, i64 4095
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%arr32_sub4095 = load volatile i32* %arr32_sub4095_addr
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store volatile i32 %arr32_sub4095, i32* @var_32bit
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; CHECK: ldr {{w[0-9]+}}, [{{x[0-9]+}}, #16380]
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%arr64_addr = load volatile i64** @arr64
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; CHECK: adrp {{x[0-9]+}}, arr64
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #:lo12:arr64]
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%arr64_sub1_addr = getelementptr i64* %arr64_addr, i64 1
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%arr64_sub1 = load volatile i64* %arr64_sub1_addr
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store volatile i64 %arr64_sub1, i64* @var_64bit
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #8]
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%arr64_sub4095_addr = getelementptr i64* %arr64_addr, i64 4095
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%arr64_sub4095 = load volatile i64* %arr64_sub4095_addr
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store volatile i64 %arr64_sub4095, i64* @var_64bit
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; CHECK: ldr {{x[0-9]+}}, [{{x[0-9]+}}, #32760]
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ret void
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}
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define void @ldst_float() {
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; CHECK-LABEL: ldst_float:
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%valfp = load volatile float* @var_float
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; CHECK: adrp {{x[0-9]+}}, var_float
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; CHECK: ldr {{s[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_float]
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store volatile float %valfp, float* @var_float
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; CHECK: str {{s[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_float]
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ret void
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}
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define void @ldst_double() {
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; CHECK-LABEL: ldst_double:
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%valfp = load volatile double* @var_double
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; CHECK: adrp {{x[0-9]+}}, var_double
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; CHECK: ldr {{d[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_double]
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store volatile double %valfp, double* @var_double
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; CHECK: str {{d[0-9]+}}, [{{x[0-9]+}}, #:lo12:var_double]
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ret void
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}
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