constant-fold.ll
2.34 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -loop-vectorize -S -mtriple=x86_64-- -o - %s | FileCheck %s
; Testcase that verify that we don't get a faulty bitcast that cast between
; different sizes.
%rec8 = type { i16 }
@a = global [1 x %rec8] zeroinitializer
@b = global [2 x i16*] zeroinitializer
define void @f1() {
; CHECK-LABEL: @f1(
; CHECK-NEXT: bb1:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i16> undef, i16 [[OFFSET_IDX]], i32 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i16> [[BROADCAST_SPLATINSERT]], <2 x i16> undef, <2 x i32> zeroinitializer
; CHECK-NEXT: [[INDUCTION:%.*]] = add <2 x i16> [[BROADCAST_SPLAT]], <i16 0, i16 1>
; CHECK-NEXT: [[TMP0:%.*]] = add i16 [[OFFSET_IDX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = sext i16 [[TMP0]] to i64
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr [2 x i16*], [2 x i16*]* @b, i16 0, i64 [[TMP1]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i16*, i16** [[TMP2]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = bitcast i16** [[TMP3]] to <2 x i16*>*
; CHECK-NEXT: store <2 x i16*> <i16* getelementptr inbounds ([1 x %rec8], [1 x %rec8]* @a, i32 0, i32 0, i32 0), i16* getelementptr inbounds ([1 x %rec8], [1 x %rec8]* @a, i32 0, i32 0, i32 0)>, <2 x i16*>* [[TMP4]], align 8
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[INDEX_NEXT]], 2
; CHECK-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !0
; CHECK: middle.block:
bb1:
br label %bb2
bb2:
%c.1.0 = phi i16 [ 0, %bb1 ], [ %_tmp9, %bb2 ]
%_tmp1 = zext i16 0 to i64
%_tmp2 = getelementptr [1 x %rec8], [1 x %rec8]* @a, i16 0, i64 %_tmp1
%_tmp4 = bitcast %rec8* %_tmp2 to i16*
%_tmp6 = sext i16 %c.1.0 to i64
%_tmp7 = getelementptr [2 x i16*], [2 x i16*]* @b, i16 0, i64 %_tmp6
store i16* %_tmp4, i16** %_tmp7
%_tmp9 = add nsw i16 %c.1.0, 1
%_tmp11 = icmp slt i16 %_tmp9, 2
br i1 %_tmp11, label %bb2, label %bb3
bb3:
ret void
}