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llvm-mirror/test/CodeGen/AMDGPU/vector-legalizer-divergence.ll
Scott Linder 7c369fa7dd [CodeGen] Always update divergence in SelectionDAG::UpdateNodeOperands
Some overloads failed to update divergence.

Differential Revision: https://reviews.llvm.org/D47148

llvm-svn: 333947
2018-06-04 20:19:45 +00:00

31 lines
1.5 KiB
LLVM

; RUN: llc -march=amdgcn < %s
; Tests for a bug in SelectionDAG::UpdateNodeOperands exposed by VectorLegalizer
; where divergence information is not updated.
declare i32 @llvm.amdgcn.workitem.id.x()
define amdgpu_kernel void @spam(double addrspace(1)* noalias %arg) {
%tmp = tail call i32 @llvm.amdgcn.workitem.id.x()
%tmp1 = zext i32 %tmp to i64
%tmp2 = getelementptr inbounds double, double addrspace(1)* %arg, i64 %tmp1
%tmp3 = load double, double addrspace(1)* %tmp2, align 8
%tmp4 = fadd double undef, 0.000000e+00
%tmp5 = insertelement <2 x double> undef, double %tmp4, i64 0
%tmp6 = insertelement <2 x double> %tmp5, double %tmp3, i64 1
%tmp7 = insertelement <2 x double> %tmp6, double 0.000000e+00, i64 1
%tmp8 = fadd <2 x double> zeroinitializer, undef
%tmp9 = fadd <2 x double> %tmp7, zeroinitializer
%tmp10 = extractelement <2 x double> %tmp8, i64 0
%tmp11 = getelementptr inbounds double, double addrspace(1)* %tmp2, i64 2
store double %tmp10, double addrspace(1)* %tmp11, align 8
%tmp12 = getelementptr inbounds double, double addrspace(1)* %tmp2, i64 3
store double undef, double addrspace(1)* %tmp12, align 8
%tmp13 = extractelement <2 x double> %tmp9, i64 0
%tmp14 = getelementptr inbounds double, double addrspace(1)* %tmp2, i64 6
store double %tmp13, double addrspace(1)* %tmp14, align 8
%tmp15 = getelementptr inbounds double, double addrspace(1)* %tmp2, i64 7
store double 0.000000e+00, double addrspace(1)* %tmp15, align 8
ret void
}