1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=i386-unknown-linux-gnu -mcpu=cannonlake | FileCheck %s
4 ; Check the correctness of following test.
6 ; In 32-bits targets the <i64 12, ...> will convert to <i32 12, i32 0, ...> in
7 ; type legalization and turn to <i32 12, i32 undef, ...> in combining due to it
8 ; only use the low i32 bits.
9 ; But the fshl is <8 x i64> fshl, the <i32 12, i32 undef, ...> will bitcast to
10 ; <i64 Element, ...> back. Some like:
11 ; ==============================================================================
12 ; // t1: v16i32 = Constant:i32<12>, undef:i32, Constant:i32<12>, undef:i32, ...
13 ; // t2: v8i64 = bitcast t1
14 ; // t5: v8i64 = fshl t3, t4, t2
15 ; ==============================================================================
16 ; We should make sure not "merging" <i32 12, i32 undef> to <i64 undef>
17 ; (We can not convert t2 to {i64 undef, i64 undef, ...})
18 ; That is not equal with the origin result)
20 define void @test_fshl(<8 x i64> %lo, <8 x i64> %hi, ptr %arr) {
21 ; CHECK-LABEL: test_fshl:
22 ; CHECK: # %bb.0: # %entry
23 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
24 ; CHECK-NEXT: vpsllq $12, %zmm1, %zmm1
25 ; CHECK-NEXT: vpsrlq $52, %zmm0, %zmm0
26 ; CHECK-NEXT: vpternlogq $168, {{\.?LCPI[0-9]+_[0-9]+}}, %zmm1, %zmm0
27 ; CHECK-NEXT: vmovdqa64 %zmm0, (%eax)
28 ; CHECK-NEXT: vzeroupper
31 %fshl = call <8 x i64> @llvm.fshl.v8i64(<8 x i64> %hi, <8 x i64> %lo, <8 x i64> <i64 12, i64 12, i64 12, i64 12, i64 12, i64 12, i64 12, i64 12>)
32 %res = shufflevector <8 x i64> %fshl, <8 x i64> zeroinitializer, <8 x i32> <i32 0, i32 1, i32 10, i32 11, i32 12, i32 13, i32 6, i32 7>
33 store <8 x i64> %res, ptr %arr, align 64
38 ; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
39 declare <8 x i64> @llvm.fshl.v8i64(<8 x i64>, <8 x i64>, <8 x i64>)