1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
2 ; RUN: opt -passes=slp-vectorizer -mtriple=x86_64 -mattr=+avx2 -S < %s | FileCheck %s
4 ; Test case for issue #69670.
6 ; #69392 uncovered a problem with delayed gather nodes emission, specifically
7 ; when the node is a PHI operand, which depends on another gathered node,
8 ; also an operand of a PHI (in another block).
11 ; CHECK-LABEL: define void @test(
12 ; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
14 ; CHECK-NEXT: [[DOTPRE_PRE:%.*]] = load float, ptr poison, align 4
15 ; CHECK-NEXT: [[TMP0:%.*]] = insertelement <2 x float> <float poison, float undef>, float [[DOTPRE_PRE]], i32 0
16 ; CHECK-NEXT: br label [[BB1:%.*]]
18 ; CHECK-NEXT: [[TMP1:%.*]] = phi <2 x float> [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP10:%.*]], [[BB2:%.*]] ]
19 ; CHECK-NEXT: br label [[BB2]]
21 ; CHECK-NEXT: [[TMP2:%.*]] = phi <2 x float> [ [[TMP1]], [[BB1]] ], [ [[TMP9:%.*]], [[BB2]] ]
22 ; CHECK-NEXT: [[I1:%.*]] = load float, ptr poison, align 4
23 ; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <2 x float> [[TMP2]], <2 x float> poison, <2 x i32> <i32 1, i32 poison>
24 ; CHECK-NEXT: [[TMP4:%.*]] = insertelement <2 x float> [[TMP3]], float [[I1]], i32 1
25 ; CHECK-NEXT: [[TMP5:%.*]] = fdiv <2 x float> [[TMP2]], [[TMP4]]
26 ; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x float> [[TMP5]], i32 0
27 ; CHECK-NEXT: [[TMP7:%.*]] = extractelement <2 x float> [[TMP5]], i32 1
28 ; CHECK-NEXT: [[MUL:%.*]] = fmul float [[TMP6]], [[TMP7]]
29 ; CHECK-NEXT: tail call void @foo(float [[MUL]])
30 ; CHECK-NEXT: [[I2:%.*]] = load float, ptr poison, align 4
31 ; CHECK-NEXT: [[TOBOOL:%.*]] = fcmp une float [[I2]], 0.000000e+00
32 ; CHECK-NEXT: [[TMP8:%.*]] = shufflevector <2 x float> [[TMP5]], <2 x float> poison, <2 x i32> <i32 poison, i32 0>
33 ; CHECK-NEXT: [[TMP9]] = insertelement <2 x float> [[TMP8]], float [[I2]], i32 0
34 ; CHECK-NEXT: [[TMP10]] = shufflevector <2 x float> [[TMP9]], <2 x float> [[TMP2]], <2 x i32> <i32 0, i32 3>
35 ; CHECK-NEXT: br i1 [[TOBOOL]], label [[BB1]], label [[BB2]]
38 %.pre.pre = load float, ptr poison, align 4
41 bb1: ; preds = %bb2, %entry
42 %.pre = phi float [ %.pre.pre, %entry ], [ %i2, %bb2 ]
43 %foxtrot.0 = phi float [ undef, %entry ], [ %gulf.0, %bb2 ]
46 bb2: ; preds = %bb2, %bb1
47 %i = phi float [ %.pre, %bb1 ], [ %i2, %bb2 ]
48 %gulf.0 = phi float [ %foxtrot.0, %bb1 ], [ %div, %bb2 ]
49 %div = fdiv float %i, %gulf.0
50 %i1 = load float, ptr poison, align 4
51 %div1 = fdiv float %gulf.0, %i1
52 %mul = fmul float %div, %div1
53 tail call void @foo(float %mul)
54 %i2 = load float, ptr poison, align 4
55 %tobool = fcmp une float %i2, 0.000000e+00
56 br i1 %tobool, label %bb1, label %bb2
59 declare void @foo(float)