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llvm-mirror/test/CodeGen/Hexagon/build-vector-shuffle.ll
Krzysztof Parzyszek db3c93e416 [Hexagon] Simplify CFG after atomic expansion
This will remove suboptimal branching from the generated ll/sc loops.
The extra simplification pass affects a lot of testcases, which have
been modified to accommodate this change: either by modifying the
test to become immune to the CFG simplification, or (less preferablt)
by adding option -hexagon-initial-cfg-clenaup=0.

llvm-svn: 338774
2018-08-02 22:17:53 +00:00

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671 B
LLVM

; RUN: llc -march=hexagon < %s | FileCheck %s
; Check that we don't crash.
; CHECK: vshuff
target triple = "hexagon"
define void @f0(<16 x i32>* %a0) #0 {
entry:
%v0 = icmp eq i32 undef, 0
%v1 = select i1 %v0, <32 x i16> undef, <32 x i16> zeroinitializer
%v2 = bitcast <32 x i16> %v1 to <16 x i32>
%v3 = tail call <16 x i32> @llvm.hexagon.V6.vshuffh(<16 x i32> %v2)
store <16 x i32> %v3, <16 x i32>* %a0, align 2
ret void
}
; Function Attrs: nounwind readnone
declare <16 x i32> @llvm.hexagon.V6.vshuffh(<16 x i32>) #1
attributes #0 = { nounwind "target-cpu"="hexagonv60" "target-features"="+hvxv60,+hvx-length64b" }
attributes #1 = { nounwind readnone }