clang-p2996/llvm/test/Transforms/VectorCombine/X86/load.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=vector-combine -S -mtriple=x86_64-- -mattr=sse2 | FileCheck %s --check-prefixes=CHECK,SSE2
; RUN: opt < %s -passes=vector-combine -S -mtriple=x86_64-- -mattr=avx2 | FileCheck %s --check-prefixes=CHECK,AVX2

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"

define float @matching_fp_scalar(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @matching_fp_scalar(
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load float, ptr %p, align 16
  ret float %r
}

define float @matching_fp_scalar_volatile(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @matching_fp_scalar_volatile(
; CHECK-NEXT:    [[R:%.*]] = load volatile float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load volatile float, ptr %p, align 16
  ret float %r
}

define double @larger_fp_scalar(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @larger_fp_scalar(
; CHECK-NEXT:    [[R:%.*]] = load double, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret double [[R]]
;
  %r = load double, ptr %p, align 16
  ret double %r
}

define float @smaller_fp_scalar(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @smaller_fp_scalar(
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load float, ptr %p, align 16
  ret float %r
}

define float @matching_fp_vector(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @matching_fp_vector(
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load float, ptr %p, align 16
  ret float %r
}

define float @matching_fp_vector_gep00(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @matching_fp_vector_gep00(
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load float, ptr %p, align 16
  ret float %r
}

define float @matching_fp_vector_gep01(ptr align 16 dereferenceable(20) %p) {
; CHECK-LABEL: @matching_fp_vector_gep01(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <4 x float>, ptr [[P:%.*]], i64 0, i64 1
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[GEP]], align 4
; CHECK-NEXT:    ret float [[R]]
;
  %gep = getelementptr inbounds <4 x float>, ptr %p, i64 0, i64 1
  %r = load float, ptr %gep, align 4
  ret float %r
}

define float @matching_fp_vector_gep01_deref(ptr align 16 dereferenceable(19) %p) {
; CHECK-LABEL: @matching_fp_vector_gep01_deref(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <4 x float>, ptr [[P:%.*]], i64 0, i64 1
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[GEP]], align 4
; CHECK-NEXT:    ret float [[R]]
;
  %gep = getelementptr inbounds <4 x float>, ptr %p, i64 0, i64 1
  %r = load float, ptr %gep, align 4
  ret float %r
}

define float @matching_fp_vector_gep10(ptr align 16 dereferenceable(32) %p) {
; CHECK-LABEL: @matching_fp_vector_gep10(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <4 x float>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[GEP]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %gep = getelementptr inbounds <4 x float>, ptr %p, i64 1, i64 0
  %r = load float, ptr %gep, align 16
  ret float %r
}

define float @matching_fp_vector_gep10_deref(ptr align 16 dereferenceable(31) %p) {
; CHECK-LABEL: @matching_fp_vector_gep10_deref(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <4 x float>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[GEP]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %gep = getelementptr inbounds <4 x float>, ptr %p, i64 1, i64 0
  %r = load float, ptr %gep, align 16
  ret float %r
}

define float @nonmatching_int_vector(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @nonmatching_int_vector(
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load float, ptr %p, align 16
  ret float %r
}

define double @less_aligned(ptr align 4 dereferenceable(16) %p) {
; CHECK-LABEL: @less_aligned(
; CHECK-NEXT:    [[R:%.*]] = load double, ptr [[P:%.*]], align 4
; CHECK-NEXT:    ret double [[R]]
;
  %r = load double, ptr %p, align 4
  ret double %r
}

define float @matching_fp_scalar_small_deref(ptr align 16 dereferenceable(15) %p) {
; CHECK-LABEL: @matching_fp_scalar_small_deref(
; CHECK-NEXT:    [[R:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret float [[R]]
;
  %r = load float, ptr %p, align 16
  ret float %r
}

define i64 @larger_int_scalar(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @larger_int_scalar(
; CHECK-NEXT:    [[R:%.*]] = load i64, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret i64 [[R]]
;
  %r = load i64, ptr %p, align 16
  ret i64 %r
}

define i8 @smaller_int_scalar(ptr align 16 dereferenceable(16) %p) {
; CHECK-LABEL: @smaller_int_scalar(
; CHECK-NEXT:    [[R:%.*]] = load i8, ptr [[P:%.*]], align 16
; CHECK-NEXT:    ret i8 [[R]]
;
  %r = load i8, ptr %p, align 16
  ret i8 %r
}

define double @larger_fp_scalar_256bit_vec(ptr align 32 dereferenceable(32) %p) {
; CHECK-LABEL: @larger_fp_scalar_256bit_vec(
; CHECK-NEXT:    [[R:%.*]] = load double, ptr [[P:%.*]], align 32
; CHECK-NEXT:    ret double [[R]]
;
  %r = load double, ptr %p, align 32
  ret double %r
}

define <4 x float> @load_f32_insert_v4f32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_f32_insert_v4f32(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

define <4 x float> @casted_load_f32_insert_v4f32(ptr align 4 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @casted_load_f32_insert_v4f32(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

; Element type does not change cost.

define <4 x i32> @load_i32_insert_v4i32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_i32_insert_v4i32(
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i32 0
; CHECK-NEXT:    ret <4 x i32> [[R]]
;
  %s = load i32, ptr %p, align 4
  %r = insertelement <4 x i32> undef, i32 %s, i32 0
  ret <4 x i32> %r
}

; Pointer type does not change cost.

define <4 x i32> @casted_load_i32_insert_v4i32(ptr align 4 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @casted_load_i32_insert_v4i32(
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i32 0
; CHECK-NEXT:    ret <4 x i32> [[R]]
;
  %s = load i32, ptr %p, align 4
  %r = insertelement <4 x i32> undef, i32 %s, i32 0
  ret <4 x i32> %r
}

; This is canonical form for vector element access.

define <4 x float> @gep00_load_f32_insert_v4f32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @gep00_load_f32_insert_v4f32(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i64 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load float, ptr %p, align 16
  %r = insertelement <4 x float> undef, float %s, i64 0
  ret <4 x float> %r
}

; Should work with addrspace as well.

define <4 x float> @gep00_load_f32_insert_v4f32_addrspace(ptr addrspace(44) align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @gep00_load_f32_insert_v4f32_addrspace(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr addrspace(44) [[P:%.*]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i64 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load float, ptr addrspace(44) %p, align 16
  %r = insertelement <4 x float> undef, float %s, i64 0
  ret <4 x float> %r
}

; If there are enough dereferenceable bytes, we can offset the vector load.

define <8 x i16> @gep01_load_i16_insert_v8i16(ptr align 16 dereferenceable(18) %p) nofree nosync {
; CHECK-LABEL: @gep01_load_i16_insert_v8i16(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 0, i64 1
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 2
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 0, i64 1
  %s = load i16, ptr %gep, align 2
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Can't safely load the offset vector, but can load+shuffle if it is profitable.

define <8 x i16> @gep01_load_i16_insert_v8i16_deref(ptr align 16 dereferenceable(17) %p) nofree nosync {
; CHECK-LABEL: @gep01_load_i16_insert_v8i16_deref(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 0, i64 1
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 2
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 0, i64 1
  %s = load i16, ptr %gep, align 2
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Verify that alignment of the new load is not over-specified.

define <8 x i16> @gep01_load_i16_insert_v8i16_deref_minalign(ptr align 2 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @gep01_load_i16_insert_v8i16_deref_minalign(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 0, i64 1
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 8
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 0, i64 1
  %s = load i16, ptr %gep, align 8
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Negative test - if we are shuffling a load from the base pointer, the address offset
; must be a multiple of element size.
; TODO: Could bitcast around this limitation.

define <4 x i32> @gep01_bitcast_load_i32_insert_v4i32(ptr align 1 dereferenceable(16) %p) {
; CHECK-LABEL: @gep01_bitcast_load_i32_insert_v4i32(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <16 x i8>, ptr [[P:%.*]], i64 0, i64 1
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[GEP]], align 1
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i64 0
; CHECK-NEXT:    ret <4 x i32> [[R]]
;
  %gep = getelementptr inbounds <16 x i8>, ptr %p, i64 0, i64 1
  %s = load i32, ptr %gep, align 1
  %r = insertelement <4 x i32> undef, i32 %s, i64 0
  ret <4 x i32> %r
}

define <4 x i32> @gep012_bitcast_load_i32_insert_v4i32(ptr align 1 dereferenceable(20) %p) nofree nosync {
; CHECK-LABEL: @gep012_bitcast_load_i32_insert_v4i32(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <16 x i8>, ptr [[P:%.*]], i64 0, i64 12
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[GEP]], align 1
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i64 0
; CHECK-NEXT:    ret <4 x i32> [[R]]
;
  %gep = getelementptr inbounds <16 x i8>, ptr %p, i64 0, i64 12
  %s = load i32, ptr %gep, align 1
  %r = insertelement <4 x i32> undef, i32 %s, i64 0
  ret <4 x i32> %r
}

; Negative test - if we are shuffling a load from the base pointer, the address offset
; must be a multiple of element size and the offset must be low enough to fit in the vector
; (bitcasting would not help this case).

define <4 x i32> @gep013_bitcast_load_i32_insert_v4i32(ptr align 1 dereferenceable(20) %p) nofree nosync {
; CHECK-LABEL: @gep013_bitcast_load_i32_insert_v4i32(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <16 x i8>, ptr [[P:%.*]], i64 0, i64 13
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[GEP]], align 1
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x i32> undef, i32 [[S]], i64 0
; CHECK-NEXT:    ret <4 x i32> [[R]]
;
  %gep = getelementptr inbounds <16 x i8>, ptr %p, i64 0, i64 13
  %s = load i32, ptr %gep, align 1
  %r = insertelement <4 x i32> undef, i32 %s, i64 0
  ret <4 x i32> %r
}

; If there are enough dereferenceable bytes, we can offset the vector load.

define <8 x i16> @gep10_load_i16_insert_v8i16(ptr align 16 dereferenceable(32) %p) nofree nosync {
; CHECK-LABEL: @gep10_load_i16_insert_v8i16(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 1, i64 0
  %s = load i16, ptr %gep, align 16
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Negative test - disable under asan because widened load can cause spurious
; use-after-poison issues when __asan_poison_memory_region is used.

define <8 x i16> @gep10_load_i16_insert_v8i16_asan(ptr align 16 dereferenceable(32) %p) sanitize_address nofree nosync {
; CHECK-LABEL: @gep10_load_i16_insert_v8i16_asan(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 1, i64 0
  %s = load i16, ptr %gep, align 16
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; hwasan and memtag should be similarly suppressed.

define <8 x i16> @gep10_load_i16_insert_v8i16_hwasan(ptr align 16 dereferenceable(32) %p) sanitize_hwaddress nofree nosync {
; CHECK-LABEL: @gep10_load_i16_insert_v8i16_hwasan(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 1, i64 0
  %s = load i16, ptr %gep, align 16
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

define <8 x i16> @gep10_load_i16_insert_v8i16_memtag(ptr align 16 dereferenceable(32) %p) sanitize_memtag nofree nosync {
; CHECK-LABEL: @gep10_load_i16_insert_v8i16_memtag(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 1, i64 0
  %s = load i16, ptr %gep, align 16
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Negative test - disable under tsan because widened load may overlap bytes
; being concurrently modified. tsan does not know that some bytes are undef.

define <8 x i16> @gep10_load_i16_insert_v8i16_tsan(ptr align 16 dereferenceable(32) %p) sanitize_thread nofree nosync {
; CHECK-LABEL: @gep10_load_i16_insert_v8i16_tsan(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 1, i64 0
  %s = load i16, ptr %gep, align 16
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Negative test - can't safely load the offset vector, but could load+shuffle.

define <8 x i16> @gep10_load_i16_insert_v8i16_deref(ptr align 16 dereferenceable(31) %p) nofree nosync {
; CHECK-LABEL: @gep10_load_i16_insert_v8i16_deref(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <8 x i16>, ptr [[P:%.*]], i64 1, i64 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[GEP]], align 16
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <8 x i16>, ptr %p, i64 1, i64 0
  %s = load i16, ptr %gep, align 16
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; Negative test - do not alter volatile.

define <4 x float> @load_f32_insert_v4f32_volatile(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_f32_insert_v4f32_volatile(
; CHECK-NEXT:    [[S:%.*]] = load volatile float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load volatile float, ptr %p, align 4
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

; Pointer is not as aligned as load, but that's ok.
; The new load uses the larger alignment value.

define <4 x float> @load_f32_insert_v4f32_align(ptr align 1 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_f32_insert_v4f32_align(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

; Negative test - not enough bytes.

define <4 x float> @load_f32_insert_v4f32_deref(ptr align 4 dereferenceable(15) %p) nofree nosync {
; CHECK-LABEL: @load_f32_insert_v4f32_deref(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

define <8 x i32> @load_i32_insert_v8i32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_i32_insert_v8i32(
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i32> undef, i32 [[S]], i32 0
; CHECK-NEXT:    ret <8 x i32> [[R]]
;
  %s = load i32, ptr %p, align 4
  %r = insertelement <8 x i32> undef, i32 %s, i32 0
  ret <8 x i32> %r
}

define <8 x i32> @casted_load_i32_insert_v8i32(ptr align 4 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @casted_load_i32_insert_v8i32(
; CHECK-NEXT:    [[S:%.*]] = load i32, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i32> undef, i32 [[S]], i32 0
; CHECK-NEXT:    ret <8 x i32> [[R]]
;
  %s = load i32, ptr %p, align 4
  %r = insertelement <8 x i32> undef, i32 %s, i32 0
  ret <8 x i32> %r
}

define <16 x float> @load_f32_insert_v16f32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_f32_insert_v16f32(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <16 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <16 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <16 x float> undef, float %s, i32 0
  ret <16 x float> %r
}

define <2 x float> @load_f32_insert_v2f32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_f32_insert_v2f32(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <2 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <2 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <2 x float> undef, float %s, i32 0
  ret <2 x float> %r
}

; Negative test - suppress load widening for asan/hwasan/memtag/tsan.

define <2 x float> @load_f32_insert_v2f32_asan(ptr align 16 dereferenceable(16) %p) sanitize_address {
; CHECK-LABEL: @load_f32_insert_v2f32_asan(
; CHECK-NEXT:    [[S:%.*]] = load float, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[R:%.*]] = insertelement <2 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <2 x float> [[R]]
;
  %s = load float, ptr %p, align 4
  %r = insertelement <2 x float> undef, float %s, i32 0
  ret <2 x float> %r
}

declare ptr @getscaleptr()
define void @PR47558_multiple_use_load(ptr nocapture nonnull %resultptr, ptr nocapture nonnull readonly %opptr) {
; CHECK-LABEL: @PR47558_multiple_use_load(
; CHECK-NEXT:    [[SCALEPTR:%.*]] = tail call nonnull align 16 dereferenceable(64) ptr @getscaleptr()
; CHECK-NEXT:    [[OP:%.*]] = load <2 x float>, ptr [[OPPTR:%.*]], align 4
; CHECK-NEXT:    [[SCALE:%.*]] = load float, ptr [[SCALEPTR]], align 16
; CHECK-NEXT:    [[T1:%.*]] = insertelement <2 x float> undef, float [[SCALE]], i32 0
; CHECK-NEXT:    [[T2:%.*]] = insertelement <2 x float> [[T1]], float [[SCALE]], i32 1
; CHECK-NEXT:    [[T3:%.*]] = fmul <2 x float> [[OP]], [[T2]]
; CHECK-NEXT:    [[T4:%.*]] = extractelement <2 x float> [[T3]], i32 0
; CHECK-NEXT:    [[RESULT0:%.*]] = insertelement <2 x float> undef, float [[T4]], i32 0
; CHECK-NEXT:    [[RESULT1:%.*]] = shufflevector <2 x float> [[RESULT0]], <2 x float> [[T3]], <2 x i32> <i32 0, i32 3>
; CHECK-NEXT:    store <2 x float> [[RESULT1]], ptr [[RESULTPTR:%.*]], align 8
; CHECK-NEXT:    ret void
;
  %scaleptr = tail call nonnull align 16 dereferenceable(64) ptr @getscaleptr()
  %op = load <2 x float>, ptr %opptr, align 4
  %scale = load float, ptr %scaleptr, align 16
  %t1 = insertelement <2 x float> undef, float %scale, i32 0
  %t2 = insertelement <2 x float> %t1, float %scale, i32 1
  %t3 = fmul <2 x float> %op, %t2
  %t4 = extractelement <2 x float> %t3, i32 0
  %result0 = insertelement <2 x float> undef, float %t4, i32 0
  %t5 = extractelement <2 x float> %t3, i32 1
  %result1 = insertelement <2 x float> %result0, float %t5, i32 1
  store <2 x float> %result1, ptr %resultptr, align 8
  ret void
}

define <4 x float> @load_v2f32_extract_insert_v4f32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @load_v2f32_extract_insert_v4f32(
; CHECK-NEXT:    [[L:%.*]] = load <2 x float>, ptr [[P:%.*]], align 4
; CHECK-NEXT:    [[S:%.*]] = extractelement <2 x float> [[L]], i32 0
; CHECK-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; CHECK-NEXT:    ret <4 x float> [[R]]
;
  %l = load <2 x float>, ptr %p, align 4
  %s = extractelement <2 x float> %l, i32 0
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

define <4 x float> @load_v8f32_extract_insert_v4f32(ptr align 16 dereferenceable(16) %p) nofree nosync {
; SSE2-LABEL: @load_v8f32_extract_insert_v4f32(
; SSE2-NEXT:    [[TMP1:%.*]] = getelementptr inbounds <8 x float>, ptr [[P:%.*]], i32 0, i32 0
; SSE2-NEXT:    [[S:%.*]] = load float, ptr [[TMP1]], align 4
; SSE2-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; SSE2-NEXT:    ret <4 x float> [[R]]
;
; AVX2-LABEL: @load_v8f32_extract_insert_v4f32(
; AVX2-NEXT:    [[L:%.*]] = load <8 x float>, ptr [[P:%.*]], align 4
; AVX2-NEXT:    [[S:%.*]] = extractelement <8 x float> [[L]], i32 0
; AVX2-NEXT:    [[R:%.*]] = insertelement <4 x float> undef, float [[S]], i32 0
; AVX2-NEXT:    ret <4 x float> [[R]]
;
  %l = load <8 x float>, ptr %p, align 4
  %s = extractelement <8 x float> %l, i32 0
  %r = insertelement <4 x float> undef, float %s, i32 0
  ret <4 x float> %r
}

define <8 x i32> @load_v1i32_extract_insert_v8i32_extra_use(ptr align 16 dereferenceable(16) %p, ptr %store_ptr) nofree nosync {
; CHECK-LABEL: @load_v1i32_extract_insert_v8i32_extra_use(
; CHECK-NEXT:    [[L:%.*]] = load <1 x i32>, ptr [[P:%.*]], align 4
; CHECK-NEXT:    store <1 x i32> [[L]], ptr [[STORE_PTR:%.*]], align 4
; CHECK-NEXT:    [[S:%.*]] = extractelement <1 x i32> [[L]], i32 0
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i32> undef, i32 [[S]], i32 0
; CHECK-NEXT:    ret <8 x i32> [[R]]
;
  %l = load <1 x i32>, ptr %p, align 4
  store <1 x i32> %l, ptr %store_ptr
  %s = extractelement <1 x i32> %l, i32 0
  %r = insertelement <8 x i32> undef, i32 %s, i32 0
  ret <8 x i32> %r
}

; Can't safely load the offset vector, but can load+shuffle if it is profitable.

define <8 x i16> @gep1_load_v2i16_extract_insert_v8i16(ptr align 1 dereferenceable(16) %p) nofree nosync {
; CHECK-LABEL: @gep1_load_v2i16_extract_insert_v8i16(
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds <2 x i16>, ptr [[P:%.*]], i64 1
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds <2 x i16>, ptr [[GEP]], i32 0, i32 0
; CHECK-NEXT:    [[S:%.*]] = load i16, ptr [[TMP1]], align 8
; CHECK-NEXT:    [[R:%.*]] = insertelement <8 x i16> undef, i16 [[S]], i64 0
; CHECK-NEXT:    ret <8 x i16> [[R]]
;
  %gep = getelementptr inbounds <2 x i16>, ptr %p, i64 1
  %l = load <2 x i16>, ptr %gep, align 8
  %s = extractelement <2 x i16> %l, i32 0
  %r = insertelement <8 x i16> undef, i16 %s, i64 0
  ret <8 x i16> %r
}

; PR30986 - split vector loads for scalarized operations
define <2 x i64> @PR30986(ptr %0) {
; CHECK-LABEL: @PR30986(
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds <2 x i64>, ptr [[TMP0:%.*]], i32 0, i32 0
; CHECK-NEXT:    [[TMP3:%.*]] = load i64, ptr [[TMP2]], align 16
; CHECK-NEXT:    [[TMP4:%.*]] = tail call i64 @llvm.ctpop.i64(i64 [[TMP3]])
; CHECK-NEXT:    [[TMP5:%.*]] = insertelement <2 x i64> undef, i64 [[TMP4]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds <2 x i64>, ptr [[TMP0]], i32 0, i32 1
; CHECK-NEXT:    [[TMP7:%.*]] = load i64, ptr [[TMP6]], align 8
; CHECK-NEXT:    [[TMP8:%.*]] = tail call i64 @llvm.ctpop.i64(i64 [[TMP7]])
; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <2 x i64> [[TMP5]], i64 [[TMP8]], i32 1
; CHECK-NEXT:    ret <2 x i64> [[TMP9]]
;
  %2 = load <2 x i64>, ptr %0, align 16
  %3 = extractelement <2 x i64> %2, i32 0
  %4 = tail call i64 @llvm.ctpop.i64(i64 %3)
  %5 = insertelement <2 x i64> undef, i64 %4, i32 0
  %6 = extractelement <2 x i64> %2, i32 1
  %7 = tail call i64 @llvm.ctpop.i64(i64 %6)
  %8 = insertelement <2 x i64> %5, i64 %7, i32 1
  ret <2 x i64> %8
}
declare i64 @llvm.ctpop.i64(i64)