; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+mve.fp < %s -codegenprepare -S | FileCheck -check-prefix=CHECK %s
; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+mve.fp < %s -codegenprepare -cgpp-huge-func=0 -S | FileCheck -check-prefix=CHECK %s
; Sink the shufflevector/insertelement pair, followed by the trunc. The sunk instruction end up dead.
define signext i8 @dead(ptr noalias nocapture readonly %s1, i16 zeroext %x, ptr noalias nocapture %d, i32 %n) {
; CHECK-LABEL: @dead(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N_VEC:%.*]] = and i32 [[N:%.*]], -8
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = trunc i16 [[X:%.*]] to i8
; CHECK-NEXT: [[L6:%.*]] = getelementptr inbounds i16, ptr [[S1:%.*]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i16>, ptr [[L6]], align 2
; CHECK-NEXT: [[L8:%.*]] = trunc <8 x i16> [[WIDE_LOAD]] to <8 x i8>
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <8 x i8> undef, i8 [[TMP0]], i32 0
; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <8 x i8> [[TMP1]], <8 x i8> undef, <8 x i32> zeroinitializer
; CHECK-NEXT: [[L9:%.*]] = mul <8 x i8> [[TMP2]], [[L8]]
; CHECK-NEXT: [[L13:%.*]] = getelementptr inbounds i8, ptr [[D:%.*]], i32 [[INDEX]]
; CHECK-NEXT: store <8 x i8> [[L9]], ptr [[L13]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 8
; CHECK-NEXT: [[L15:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[L15]], label [[EXIT:%.*]], label [[VECTOR_BODY]]
; CHECK: exit:
; CHECK-NEXT: ret i8 0
;
entry:
%n.vec = and i32 %n, -8
%l0 = trunc i16 %x to i8
%l1 = insertelement <8 x i8> undef, i8 %l0, i32 0
%broadcast.splat26 = shufflevector <8 x i8> %l1, <8 x i8> undef, <8 x i32> zeroinitializer
br label %vector.body
vector.body: ; preds = %vector.body, %entry
%index = phi i32 [ 0, %entry ], [ %index.next, %vector.body ]
%l6 = getelementptr inbounds i16, ptr %s1, i32 %index
%wide.load = load <8 x i16>, ptr %l6, align 2
%l8 = trunc <8 x i16> %wide.load to <8 x i8>
%l9 = mul <8 x i8> %broadcast.splat26, %l8
%l13 = getelementptr inbounds i8, ptr %d, i32 %index
store <8 x i8> %l9, ptr %l13, align 1
%index.next = add i32 %index, 8
%l15 = icmp eq i32 %index.next, %n.vec
br i1 %l15, label %exit, label %vector.body
exit: ; preds = %vector.body
ret i8 0
}
; Same as above, but the shuffle has an extra use meaning it shouldnt be deleted
define signext i8 @alive(ptr noalias nocapture readonly %s1, i16 zeroext %x, ptr noalias nocapture %d, i32 %n) {
; CHECK-LABEL: @alive(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N_VEC:%.*]] = and i32 [[N:%.*]], -8
; CHECK-NEXT: [[L0:%.*]] = trunc i16 [[X:%.*]] to i8
; CHECK-NEXT: [[L1:%.*]] = insertelement <8 x i8> undef, i8 [[L0]], i32 0
; CHECK-NEXT: [[BROADCAST_SPLAT26:%.*]] = shufflevector <8 x i8> [[L1]], <8 x i8> undef, <8 x i32> zeroinitializer
; CHECK-NEXT: [[L2:%.*]] = sub <8 x i8> zeroinitializer, [[BROADCAST_SPLAT26]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = trunc i16 [[X]] to i8
; CHECK-NEXT: [[L6:%.*]] = getelementptr inbounds i16, ptr [[S1:%.*]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i16>, ptr [[L6]], align 2
; CHECK-NEXT: [[L8:%.*]] = trunc <8 x i16> [[WIDE_LOAD]] to <8 x i8>
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <8 x i8> undef, i8 [[TMP0]], i32 0
; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <8 x i8> [[TMP1]], <8 x i8> undef, <8 x i32> zeroinitializer
; CHECK-NEXT: [[L9:%.*]] = mul <8 x i8> [[TMP2]], [[L8]]
; CHECK-NEXT: [[L13:%.*]] = getelementptr inbounds i8, ptr [[D:%.*]], i32 [[INDEX]]
; CHECK-NEXT: store <8 x i8> [[L9]], ptr [[L13]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 8
; CHECK-NEXT: [[L15:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[L15]], label [[EXIT:%.*]], label [[VECTOR_BODY]]
; CHECK: exit:
; CHECK-NEXT: ret i8 0
;
entry:
%n.vec = and i32 %n, -8
%l0 = trunc i16 %x to i8
%l1 = insertelement <8 x i8> undef, i8 %l0, i32 0
%broadcast.splat26 = shufflevector <8 x i8> %l1, <8 x i8> undef, <8 x i32> zeroinitializer
%l2 = sub <8 x i8> zeroinitializer, %broadcast.splat26
br label %vector.body
vector.body: ; preds = %vector.body, %entry
%index = phi i32 [ 0, %entry ], [ %index.next, %vector.body ]
%l6 = getelementptr inbounds i16, ptr %s1, i32 %index
%wide.load = load <8 x i16>, ptr %l6, align 2
%l8 = trunc <8 x i16> %wide.load to <8 x i8>
%l9 = mul <8 x i8> %broadcast.splat26, %l8
%l13 = getelementptr inbounds i8, ptr %d, i32 %index
store <8 x i8> %l9, ptr %l13, align 1
%index.next = add i32 %index, 8
%l15 = icmp eq i32 %index.next, %n.vec
br i1 %l15, label %exit, label %vector.body
exit: ; preds = %vector.body
ret i8 0
}
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