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The benchmarking summarized in http://lists.llvm.org/pipermail/llvm-dev/2017-May/113525.html showed this is beneficial for a wide range of cores. As is to be expected, quite a few small adaptations are needed to the regressions tests, as the difference in scheduling results in: - Quite a few small instruction schedule differences. - A few changes in register allocation decisions caused by different instruction schedules. - A few changes in IfConversion decisions, due to a difference in instruction schedule and/or the estimated cost of a branch mispredict. llvm-svn: 306514
153 lines
5.0 KiB
LLVM
153 lines
5.0 KiB
LLVM
; RUN: llc -mtriple=arm-eabi -float-abi=soft -mattr=+neon %s -o - | FileCheck %s
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; RUN: llc -mtriple=arm-eabi -float-abi=soft -mattr=+neon -regalloc=basic %s -o - \
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; RUN: | FileCheck %s
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define <8 x i8> @vld1i8(i8* %A) nounwind {
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;CHECK-LABEL: vld1i8:
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;Check the alignment value. Max for this instruction is 64 bits:
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;CHECK: vld1.8 {d16}, [r0:64]
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%tmp1 = call <8 x i8> @llvm.arm.neon.vld1.v8i8.p0i8(i8* %A, i32 16)
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ret <8 x i8> %tmp1
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}
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define <4 x i16> @vld1i16(i16* %A) nounwind {
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;CHECK-LABEL: vld1i16:
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;CHECK: vld1.16
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%tmp0 = bitcast i16* %A to i8*
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%tmp1 = call <4 x i16> @llvm.arm.neon.vld1.v4i16.p0i8(i8* %tmp0, i32 1)
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ret <4 x i16> %tmp1
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}
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;Check for a post-increment updating load.
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define <4 x i16> @vld1i16_update(i16** %ptr) nounwind {
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;CHECK-LABEL: vld1i16_update:
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;CHECK: vld1.16 {d16}, [{{r[0-9]+}}]!
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%A = load i16*, i16** %ptr
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%tmp0 = bitcast i16* %A to i8*
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%tmp1 = call <4 x i16> @llvm.arm.neon.vld1.v4i16.p0i8(i8* %tmp0, i32 1)
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%tmp2 = getelementptr i16, i16* %A, i32 4
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store i16* %tmp2, i16** %ptr
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ret <4 x i16> %tmp1
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}
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define <2 x i32> @vld1i32(i32* %A) nounwind {
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;CHECK-LABEL: vld1i32:
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;CHECK: vld1.32
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%tmp0 = bitcast i32* %A to i8*
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%tmp1 = call <2 x i32> @llvm.arm.neon.vld1.v2i32.p0i8(i8* %tmp0, i32 1)
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ret <2 x i32> %tmp1
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}
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;Check for a post-increment updating load with register increment.
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define <2 x i32> @vld1i32_update(i32** %ptr, i32 %inc) nounwind {
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;CHECK-LABEL: vld1i32_update:
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;CHECK: vld1.32 {d16}, [{{r[0-9]+}}], {{r[0-9]+}}
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%A = load i32*, i32** %ptr
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%tmp0 = bitcast i32* %A to i8*
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%tmp1 = call <2 x i32> @llvm.arm.neon.vld1.v2i32.p0i8(i8* %tmp0, i32 1)
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%tmp2 = getelementptr i32, i32* %A, i32 %inc
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store i32* %tmp2, i32** %ptr
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ret <2 x i32> %tmp1
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}
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define <2 x float> @vld1f(float* %A) nounwind {
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;CHECK-LABEL: vld1f:
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;CHECK: vld1.32
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%tmp0 = bitcast float* %A to i8*
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%tmp1 = call <2 x float> @llvm.arm.neon.vld1.v2f32.p0i8(i8* %tmp0, i32 1)
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ret <2 x float> %tmp1
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}
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define <1 x i64> @vld1i64(i64* %A) nounwind {
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;CHECK-LABEL: vld1i64:
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;CHECK: vld1.64
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%tmp0 = bitcast i64* %A to i8*
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%tmp1 = call <1 x i64> @llvm.arm.neon.vld1.v1i64.p0i8(i8* %tmp0, i32 1)
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ret <1 x i64> %tmp1
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}
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define <16 x i8> @vld1Qi8(i8* %A) nounwind {
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;CHECK-LABEL: vld1Qi8:
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;Check the alignment value. Max for this instruction is 128 bits:
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;CHECK: vld1.8 {d16, d17}, [r0:64]
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%tmp1 = call <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* %A, i32 8)
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ret <16 x i8> %tmp1
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}
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;Check for a post-increment updating load.
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define <16 x i8> @vld1Qi8_update(i8** %ptr) nounwind {
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;CHECK-LABEL: vld1Qi8_update:
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;CHECK: vld1.8 {d16, d17}, [{{r[0-9]+|lr}}:64]!
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%A = load i8*, i8** %ptr
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%tmp1 = call <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* %A, i32 8)
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%tmp2 = getelementptr i8, i8* %A, i32 16
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store i8* %tmp2, i8** %ptr
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ret <16 x i8> %tmp1
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}
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define <8 x i16> @vld1Qi16(i16* %A) nounwind {
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;CHECK-LABEL: vld1Qi16:
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;Check the alignment value. Max for this instruction is 128 bits:
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;CHECK: vld1.16 {d16, d17}, [r0:128]
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%tmp0 = bitcast i16* %A to i8*
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%tmp1 = call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %tmp0, i32 32)
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ret <8 x i16> %tmp1
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}
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define <4 x i32> @vld1Qi32(i32* %A) nounwind {
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;CHECK-LABEL: vld1Qi32:
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;CHECK: vld1.32
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%tmp0 = bitcast i32* %A to i8*
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%tmp1 = call <4 x i32> @llvm.arm.neon.vld1.v4i32.p0i8(i8* %tmp0, i32 1)
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ret <4 x i32> %tmp1
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}
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define <4 x float> @vld1Qf(float* %A) nounwind {
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;CHECK-LABEL: vld1Qf:
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;CHECK: vld1.32
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%tmp0 = bitcast float* %A to i8*
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%tmp1 = call <4 x float> @llvm.arm.neon.vld1.v4f32.p0i8(i8* %tmp0, i32 1)
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ret <4 x float> %tmp1
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}
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define <2 x i64> @vld1Qi64(i64* %A) nounwind {
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;CHECK-LABEL: vld1Qi64:
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;CHECK: vld1.64
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%tmp0 = bitcast i64* %A to i8*
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%tmp1 = call <2 x i64> @llvm.arm.neon.vld1.v2i64.p0i8(i8* %tmp0, i32 1)
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ret <2 x i64> %tmp1
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}
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define <2 x double> @vld1Qf64(double* %A) nounwind {
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;CHECK-LABEL: vld1Qf64:
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;CHECK: vld1.64
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%tmp0 = bitcast double* %A to i8*
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%tmp1 = call <2 x double> @llvm.arm.neon.vld1.v2f64.p0i8(i8* %tmp0, i32 1)
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ret <2 x double> %tmp1
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}
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declare <8 x i8> @llvm.arm.neon.vld1.v8i8.p0i8(i8*, i32) nounwind readonly
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declare <4 x i16> @llvm.arm.neon.vld1.v4i16.p0i8(i8*, i32) nounwind readonly
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declare <2 x i32> @llvm.arm.neon.vld1.v2i32.p0i8(i8*, i32) nounwind readonly
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declare <2 x float> @llvm.arm.neon.vld1.v2f32.p0i8(i8*, i32) nounwind readonly
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declare <1 x i64> @llvm.arm.neon.vld1.v1i64.p0i8(i8*, i32) nounwind readonly
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declare <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8*, i32) nounwind readonly
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declare <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8*, i32) nounwind readonly
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declare <4 x i32> @llvm.arm.neon.vld1.v4i32.p0i8(i8*, i32) nounwind readonly
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declare <4 x float> @llvm.arm.neon.vld1.v4f32.p0i8(i8*, i32) nounwind readonly
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declare <2 x i64> @llvm.arm.neon.vld1.v2i64.p0i8(i8*, i32) nounwind readonly
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declare <2 x double> @llvm.arm.neon.vld1.v2f64.p0i8(i8*, i32) nounwind readonly
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; Radar 8355607
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; Do not crash if the vld1 result is not used.
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define void @unused_vld1_result() {
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entry:
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%0 = call <4 x float> @llvm.arm.neon.vld1.v4f32.p0i8(i8* undef, i32 1)
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call void @llvm.trap()
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unreachable
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}
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declare void @llvm.trap() nounwind
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